Answer:
The answer to your question is Aluminum
Explanation:
We need to warm from 22°C to 85°C
a) 45 g of water
b) 200 g of aluminum Cp = 0.905 J/cal°C
a) Water
Q = mCpΔT
Q = (45)(1)(85 - 22) = 45(63) = 2835 cal
b) Aluminum
Q = (200)(0.905)(85 - 22) = 114030 cal
A plant species has two possible gene variations for seed shape. One plant has smooth seeds, and another has wrinkled seeds.There is a no chance that their offspring will be born with wrinkled seeds. What can u conclude from this information
Answer: Genes
Explanation: Both plants are heterozygous for smooth seeds making it a dominant trait.
what is a massive plasma ball
Answer: A plasma ball — also sometimes called a plasma globe, lamp, dome, or sphere — is a clear glass ball filled with a mixture of noble gases with a high-voltage electrode at its center.
Explanation:
a massive plasma ball is a one of those random things that you find at walmart lol. when you put ur hand on it it looks like little lightning strikes are touching ur hand
A solution of NaCl has a concentration of 1.50 M. The density of the solution is 1.06 g/mL. What is the concentration solution by percent in mass?
Answer:
The concentration solution by percent in mass is 8.28%
Explanation:
Molarity is moles of solute present in 1L of its solution .
Hence the formula is
[tex]$\left.\text {Molarity}=\frac{\text {moles of solute}}{\text {Volume of solution in } L} \text { (unit is } \frac{\text { mol }}{L} \text { or } M\right)=\frac{1.50 \mathrm{mol}}{1 \mathrm{L}}$[/tex]
Let us convert the numerator and the denominator into mass in g
Numerator :
[tex]mass $=$ moles $\times$ molar mass\\\\$=1.50 \mathrm{mol} \times 58.5 \frac{g}{\text { mol }}=87.75 \mathrm{g}$ (solute)[/tex]
Denominator :
[tex]$\begin{aligned} \text {mass} &=\text { density } \times \text {volume}=\frac{1.06 \mathrm{g}}{1 \mathrm{ml}} \times 1 \mathrm{L} \\\\ &=\frac{1.06 \mathrm{g}}{1 \mathrm{ml}} \times 1000 \mathrm{ml}=1060 \mathrm{g} \end{aligned}$[/tex]
The formula to find mass percentage is
[tex]$\%$ mass $=\frac{\text { mass of solute }}{\text { mass of solution }} \times 100 \%$[/tex]
[tex]$\%$ mass of $\mathrm{NaCl}=\frac{\text { mass of solute }}{\text { mass of solution }} \times 100 \%$[/tex]
[tex]$=\frac{87.75 g}{1060 g} \times 100 \%$\\[/tex]
=8.28% (Answer)
Answer:
8.27% on edge
Explanation:
True or False
If the answer is true, write "true" on the line. If the answer is false, replace the underlined word
or phrase with one that will make the sentence correct. Write the new word(s) on the line
Forming a hypothesis is the first step of the scientific method
The statement is false. Forming a hypothesis is not the first step of the scientific method. The first step is making observations.
Explanation:The statement is false. Forming a hypothesis is not the first step of the scientific method. It is actually the third step. The first step is making observations, followed by asking a question based on these observations. After these steps, a hypothesis is formed. A hypothesis is an educated guess about the answer to the question posed, based on available information. This guess is then tested through an experiment in the following steps of the scientific method.
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A 10.0cm3 volume of alcohol has a mass of 7.05g. What the density
A 10.0cm3 volume of alcohol has a mass of 7.05g. [tex]0.705 \frac{g}{c m^{3}}[/tex] is the density
Answer: [tex]0.705 \frac{g}{c m^{3}}[/tex]
Explanation:
The ratio between the mass of a substance and its unit volume is referred as density.
[tex]\text {Density}=\frac{\text { mass }}{\text { volume }}=\frac{7.05 g}{10.0 \mathrm{cm}^{3}}=0.705 \frac{g}{\mathrm{cm}^{3}}[/tex] is the Answer
Note:
1000 g = 1 kg
100 cm = 1 m
When we used to transform the given values into S.I units, then
[tex]\text {Density}\left(\frac{k g}{m^{3}}\right)=\frac{\text {Mass}(k g)}{\text {Volume}\left(m^{3}\right)}[/tex]
Alcohol’s volume can be written as, [tex]10.0 c m^{3} = 10 \times 10^{-2} m^{3}[/tex]
Alcohol’s mass can denote as, [tex]7.05 g = 7.05 \times 10^{-3} \mathrm{kg}[/tex]
Then, [tex]\text { Density }\left(\frac{k g}{m^{8}}\right)=\frac{, 00705(k g)}{0.1\left(m^{3}\right)} = .0705 \frac{\mathrm{kg}}{\mathrm{m}^{\mathrm{s}}}[/tex]
How much HNO3 is in a 100g solution that is 32% HNO3 by mass
Answer:
32 g of HNO3
Explanation:
Data Given:
Solution= 32% HNO3 by Mass
Amount of HNO3 in 100g Solution = ?
Solution:
% solution by mass = mass of solute/total mass of solution × 100 %
So,
32% HNO3 = 100g of solution contains 32 grams of HNO3
now applying the unity method
if 100 g of solution contains 32g of HNO3
Then 1g of solution will contain = ………. 32/100
So 100g of solution contain = 32x100/100= 32 g of HNO3
What do you think is the most important step in the scientific method? why?
The most important step in the scientific method is observation. Observations allow scientists to gather data and information about the natural world, which is essential for forming hypotheses, conducting experiments, and drawing conclusions.
Explanation:The most important step in the scientific method is observation. This is because observations allow scientists to gather data and information about the natural world. Without accurate observations, it would be difficult to form hypotheses, conduct experiments, and draw conclusions.
Observations can be made using our senses, such as seeing, hearing, touching, tasting, and smelling. Scientists carefully observe and record their findings in order to better understand a phenomenon or solve a problem. For example, if a scientist is studying the growth of plants, they would observe and record the height, color, and number of leaves of different plants over a period of time.
Observations help scientists identify patterns and trends, which can then be used to formulate hypotheses and design experiments. They provide the foundation for the entire scientific method and help scientists make informed decisions based on evidence.
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During which change is heat energy released?
A. Melting
B. Boiling
C. Sublimation
D. Condensation
Answer:
Condensation
Explanation:
In consideration the temperature does not change so the heat change the state of the substances
Answer:
A
Explanation:
because the substance is using the pressure of heat to melt the substance
In the photosynthesis equation, what does the subscript number mean?
Question 2 options:
Number of molecules
Number of protons
Number of electrons
Number of atoms
The equation for photosynthesis is: 6H2O + 6 CO2 --> C6H12O6 + 6O2 The numerals in each part of the equation (without balancing it) mean: H2 = 2 atoms of Hydrogen O = 1 atom of Oxygen } H2O=water C = 1 atom of Carbon O2 = 2 atoms of Oxygen } CO2= Carbon Dioxide C6 = 6 atoms of Carbon H12 = 12 atoms of Hydrogen O6= 6 atoms of Oxygen } C6H12O6 } Glucose O2 = 2 atoms of Oxygen } O2 = Oxygen When balanced: 6H2O = 6 molecules of water 6CO2 = 6 molecules of Carbon dioxide C6H12O6 = Glucose 6O2 = 6 molecules of Oxygen.
Answer:
The correct answer is "Number of atoms"
Explanation:
Photosynthesis is a unique metabolic process carried out by certain cells of those autotrophic organisms capable of elaborating their own organic matter with inorganic substances by using the energy provided by sunlight. In other words, photosynthesis is the process by which plants make their own food. For that, they need air, sun, light and water and thus, they can live and develop.
The general chemical reaction for photosynthesis is 6 moles of carbon dioxide (CO₂) and 6 moles of water (H₂O), with the addition of solar energy. This produces 1 mole of glucose (C₆H₁₂O₆) and 6 moles of oxygen (O₂). That is, the equation is represented as:
6 H₂O + 6 CO₂ --> C₆H₁₂O₆ + 6 O₂
The letters represent elements present in the species that reacts or is produced. The numbers that appear as subscripts indicate the number of atoms of the element immediately before the subscript that appear in each species and, if no subscript appears, it indicates that an atom is present.
So, the correct answer is "Number of atoms"
The density of seawater is 1.025 g/mL. What is the mass of a 1.000 liter os seawater in grams and in kilograms
Answer:
The mass is 1025 grams or 1.025 kgs
Explanation:
Mass = Density * Volume
Mass = 1.025g/ml (Density) * 1000ml (volume )
Mass = 1.025g/ml * 1000ml= 1025 g
1025 g = Mass = 1.025 kgs
If 980kJ of energy as heat are transferred to 6.2L of water at 291 K what will the final temperature be? The specific heat of water is 4.18 J/g•K. Assume that 1.0 mL of water equals 1.0 g of water.
Answer:
Final temperature = T₂ = 328.815 K
Explanation:
Given data:
Given energy = 980 KJ = 980×1000= 980000 J
Volume = 6.2 L
Initial temperature =T₁= 291 K
Specific heat of water = 4.18 j /g .K
Final temperature = T₂ = ?
Formula:
Q = m. c . ΔT
ΔT = T₂ - T₁
we will first convert the litter into milliliter
6.2 × 1000 = 6200 mL
It is given in question that
1 mL = 1 g
6200 mL = 6200 g
Now we will put the values in formula,
Q = m. c . (T₂ - T₁)
980000 j = 6200 g . 4.18 j /g .K . (T₂ - 291 K)
980000 j = 25916 j/ k . (T₂ - 291 K)
980000 j / 25916 j/ k = T₂ - 291 K
37.8145 K + 291 K =T₂
T₂ = 328.815 K
hurry plz
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Victor made the graph shown to record the observations of an experiment to study the effect of soil additives on the growth of plants. Three identical plants having a height of 25 cm were used for the experiment. The first plant had no soil additives, the second plant had wheat straw in the soil, and the third plant had polymer in the soil. All other growing conditions of the plants were kept constant.
Which correct step in the scientific method did Victor most likely do before the step described here?
Analyze the data
Publish the results
Construct a hypothesis
Make conclusions based on the graph
How is volume calculated given mass and density?
Sum of mass and density
Mass divided by density
Mass multiplied by density
Difference of mass and density
The correct steps in the scientific method did vector most likely do before the step described is make conclusion based on the graph. Thus option c is correct.
How is volume calculated given mass and density?Victor made the graph shown to record the observations of an experiment to study the effect of soil additives on the growth of plants.
Three identical plants having a height of 25 cm were used for the experiment. The first plant had no soil additives, the second plant had wheat straw in the soil, and the third plant had polymer in the soil. All other growing conditions of the plants were kept constant.
Volume is calculated if the mass and density are given as below:
As we know that density is mass per unit volume it means 1 kg of mass in 1 cubic meter is called volume.
So, mathematically
Density = mass/ volume
Then
Volume = mass/density
S.I unit of volume is cubic meter.
Therefore, The correct steps in the scientific method did vector most likely do before the step described is make conclusion based on the graph. Thus option c is correct.
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The correct step in the scientific method did Victor most likely do before the step described here is option C: Construct a hypothesis
Volume is calculated by dividing the mass of an object by its density. So, the correct option is option b: Mass divided by density
Which correct step in the scientific method did Victor most likely doScientists usually begin by creating a hypothesis before doing an experiment and gathering information.
A hypothesis is an idea or guess that can be tested to explain something we are studying.
In this situation, Victor would have guessed how adding things to the soil (like wheat straw and polymer) would change how plants grow, compared to plants without any added things.
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Convert 3.5 L into gallons
And ml
Answer:
0.924602
Explanation:
Answer:
Explanation:
3.5 l = .9246 gal
3.5 l = 3500 ml
3.5 ml = .0009246
Please answer as soon as possible
Which term a property of a mineral?
A- reflections
B- Sharpness
C- Composed of carbon
D- Streak
What is the average atomic mass of element Y if Y consists of 57.25% of atoms with a mass of 123.90 amu and 42.75% of atoms with a mass of 122.90 amu?
Answer:
The average atomic mass of Y is 123.4725 g/mol
Explanation:
The average mass of an element is calculated by taking the average of the atomic masses of its stable isotopes.
The enitre atomic mass = 100 % or 1
⇒ this consists of 57.25 % atoms with mass 123.90 g/mol
57.25 % = 0.5725
⇒ this consists of 42.75 % atoms with mass 123.90 g/mol
42.75 % = 0.4275
To calculate the mass of this isotope we use the following:
0.5725 * 123.90 + 0.4275 * 122.90 = 123.4725 g/mol
Why do the isotopes of a particular element behave differently in nuclear reactions but the same in
chemical reactions? Check all that apply.
Chemical reactions involve changes to electrons in an atom; isotopes do not differ in electrons, and
so they react the same way during chemical changes.
Chemical reactions involve changes to protons and neutrons in an atom; isotopes do not differ in
protons or neutrons, and so they react the same way during chemical changes.
Nuclear reactions involve changes to protons and neutrons in an atom; isotopes differ in neutrons,
and so they react differently to these changes.
Nuclear reactions involve changes to electrons in an atom; isotopes differ in electrons, and so they
react differently to these changes.
The isotopes of a particular element behave differently in nuclear reactions but the same in chemical reactions because the nuclear reactions involve changes to protons and neutrons in an atom and isotopes differ in neutrons and so they react differently to nuclear changes. While for chemical reactions, the electrons in an atom are involved but the isotopes do not differ in electrons and so they react the same way during chemical changes.
Answer: Option A & C
Explanation:
The reactants of chemical and nuclear reactions are different. The reactants of chemical reactions are the electrons present in the outermost shell of the reactants, while the reactants of nuclear reactions are either the nuclei of reactants or a nuclei and any subatomic particles of other reactants.
Thus it can be understood that chemical reactions consider the electrons while nuclear reactions consider the nuclei or the number of protons and neutrons of the reactants.
The isotopes of elements contain different mass number or we can say different number of neutrons but the number of electrons are same, so they behave differently in nuclear reactions and similar in chemical reactions.
Answer:
A and C
Explanation:
conversion question i cant find the right format online so
Answer:
[tex]\frac{46 g}{1 mL}[/tex] × [tex]\frac{1 kg}{1000 g}[/tex]
= [tex]\frac{46 kg}{1000 mL}[/tex]
= [tex]\frac{46 kg}{1 L}[/tex]
Explanation:
Since 1 kg is equal to 1000 g we multiply 46g/1mL by 1kg/1000g. Grams being on the bottom of the fraction so that they will cancel out. After this calculation we have 46kg/1000mL. This is equal to 46kg/1L, also written as 46kg/L.
Someone help wasn’t in school left early
Answer:
Explanation:
10.is false
11. is volcanism
12.true
13.c
14. From the deepest ocean trench to the tallest mountain, plate tectonics explains the features and movement of Earth's surface in the present and the past. Plate tectonics is the theory that Earth's outer shell is divided into several plates that glide over the mantle, the rocky inner layer above the core
One of the following properties was originally used to arrange elements in the periodic table but is no longer used to organize the modern version which property fits the description
Answer:
atomic mass
Explanation:
Answer:
atomic weight or atomic mass.
Explanation:
The development of periodic table starts from the Dobereiner's law of triad where he arranged the elements based on the average of atomic weight of two elements. the middle element was supposed to one with the atomic weight average of the two other elements.
Then the Newland law of octave was proposed where he observed the changes in the periodic trend based on atomic weight after seven elements.
Later Mendleev arranged the elements based on atomic weight only.
Thus the answer is atomic weight or atomic mass.
In modern version we use atomic number to arrange elements.
Can’t seem to sort them out into their correct spots. Can anyone help?
Here's a few connections I can make for you:
The cell membrane is what contains everything in the cell. Akin to the skin on humans.
The cytoplasm contains all the cell substances outside of the nucleus.
The nucleus is the control center of the cell. Inside, are the chromosomes which store DNA. The nucleus is surrounded by the nuclear membrane.
The mitochondria is the powerhouse of the cell. It produces energy also known as ATP.
Ribosomes are found attached to the endoplasmic reticulum. Ribosomes are responsible for protein synthesis.
Suppose that you found a gold coin in your backyard and you wanted to determine
its value. You knew that gold was selling for $323.12 per ounce. You bring it to
lab and you weigh it. But the lab scale gives you the weight in grams. What is the
value of the coin if the weight was 8.7739 g? Use conversion factors on page 21.
8.7739 g
Answer:
$99.99
Explanation:
Given parameters:
Cost of gold per ounce = $323.12
weight of gold in the lab = 8.7739g
Solution
We need to first convert the mass of the weighed gold into ounces from grams:
1 gram = 0.03527oz
8.7739g = 8.7739 x 0.03527; 0.31oz
Since 1oz of gold is $323.12
0.31oz of gold will be 0.31 x 323.12 = $99.99
1. Infer a quantitative measurement that can be made from the scene shown. Be sure to use at least ONE COMPLETE
CONTENT RELATED SENTENCE. (ref: 13)
2. Explain the difference between mass and weight. Be sure to use at least TWO COMPLETE CONTENT RELATED
SENTENCES. (ref: 9).
Answer:
Explanation:
One quantitative measurement that can be made from the above diagram is the length of the ruler. The ruler is an instrument used to measure short distances in the order of centimeters. Longer distances can be measured using a tape rule.
Mass is the amount of matter a substance contains. Weight is a function of mass and gravity on a body. When the mass of a body is recorded, it is the same everywhere in the universe. Weight on the other hand varies as gravity changes.
Answer:
The pencil measures approximately 5.5 units and mass is the amount of matter contained in a body and weight is the action that exerts the force of gravity on the body.
Explanation:
A quantitative measure that can be made from the scene shown is the length of the pencil because to measure it quantitatively we have a rule. The pencil measures approximately 5.5 units in length.
Mass is the amount of matter contained in a body and weight is the action that exerts the force of gravity on the body. The mass of an object will remain constant regardless of where it is measured, while the weight of the object will vary according to the force of gravity acting on it, which is different from the place on earth where the measurement is made.
Have a nice day!
Mantle convection is a process of that creates circular currents in the asthenosphere. As a result, the plates slowly move.
Answer:
Rigid plates that move around Earth's surface is called tectonic plates.
Explanation:
Lithosphere is rigid and relatively cold and is the outer surface of the planet. The convective motions of maintenance break the lithosphere into plates.
This place that a form can move in any direction, can move towards each other, can move away and push each other which is the reason for formation of mountains for shifting of continents for making of ocean basin.
Which of the following masses is the largest?
O 0.020 kg
0 20.0 mg
O 0.200 g
O 2000 ug
Answer:
0.020 kg=20 g this the largest
20.0 mg=.020g
.200g
2000ug
Explanation:
Final answer:
The largest mass among the given options is 0.020 kg, as it is already in kilograms and larger than the other masses when they are converted to the same unit.
Explanation:
The question asks which of the following masses is the largest:
0.020 kg
20.0 mg
0.200 g
2000 ug
To compare them, we need to express them all in the same unit, which is kilograms (the SI base unit of mass).
0.020 kg remains the same.
20.0 mg = 20.0 x 10⁻⁶ kg = 0.000020 kg
0.200 g = 0.200x 10⁻³ kg = 0.000200 kg
2000ug = 2000x 10⁻⁹ kg = 0.000002 kg
After converting, we can see that 0.020 kg is the largest mass among the given options.
what is the mass in grams of 0.0135 mol of the element sodium,Na?
Answer:
Mass of sodium is 0.1305 g.
Explanation:
Given data:
Number of moles of sodium = 0.0135 mol
Molar mass of sodium = 23 g /mol
Mass of sodium = ?
Solution:
Formula:
Number moles = mass / molar mass
Mass = number of moles × molar mass
Mass = 0.0135 mol × 23 g/mol
Mass = 0.3105 g
Final answer:
The mass of 0.0135 mol of sodium (Na) is 0.310 g.
Explanation:
The mass in grams of 0.0135 mol of the element sodium (Na) can be calculated using the molar mass of sodium. The molar mass of sodium is 22.99 g/mol. To calculate the mass, you multiply the number of moles by the molar mass:
Mass (g) = Number of moles x Molar mass
So, the mass of 0.0135 mol of sodium is:
Mass (g) = 0.0135 mol x 22.99 g/mol = 0.310 g
I’m stuck and 9310 is not the answer. I think it needs to be converted into a decimal between 1-10 please help.
Answer:
.0931 is the answer
Explanation:
you need the equations to be equal, so basically you need both of them to add up to 9310 since 9.31 x 10^3 = 9310.
In order to do this you need to move the decimal point on 9.31 to the left by 2, which is .0931.
.0931 x 10^5 = 9310
Answer:
0.0931
Explanation: since 9.31*10^3=9310 and since division is the opposite of multiplication then if you divide 9310 by 10^5 you get 0.0931
1. What is the atmospheric layer responsible for long-distance radio communication?
Question 1 options:
Troposphere
Stratosphere
Exosphere
Thermosphere
What is the formula for C2H6?
The formula for C2H6 is CH3-CH3.
Explanation:
The given formula C2H6 is the molecular formula depicting the integral number of atoms of combining elements. From this formula, it can confirmed that 2 atoms of carbon has combined with 6 atoms of hydrogen, but the arrangement of these atoms and the bonding between them is unclear from the given formula.
In order to determine the bonding occurring between elements and how the atoms are arranged or bonded with each other, we use structural formula representation. It is known that a single carbon atom that should have four bonds to attain the stable state and each hydrogen atom can share only one electron.
So the structural formula of C2H6 can be written as CH3-CH3. This indicates that three hydrogen atoms will be bonded with a single carbon atom leading to formation of single bond between two carbon atoms surrounded by three hydrogen atoms on either sides of carbon atoms. This material is termed as ethane and it falls in alkalies group of organic compounds.
Answer:
The general Formula given for alkanes is [tex]CnH2n+2[/tex] and hence it shows [tex]C_2 H_6[/tex] is the second alkane and is named ethane.
Explanation:
Formula here shows two molecules of [tex]CH_3[/tex] are joined that is the formula for Ethane becomes [tex]CH_3-CH_3[/tex].
If we break the name ethane it gives two divisions eth and ane the former means to while the latter represents the alkane family. Hence the formula represents two carbons in alkane family which makes it [tex]C_2H_6[/tex].
Due in 30 minutes
how is chemical activity used to separate copper from its ores
Explanation:
You can use copper's chemical activity to extract copper from an ore. In the process of electrolysis, and electric current breaks the chemical bond that joins the metal and other elements in the compound. ... When iron ore and a source of carbon are heated together, the iron is released
How many core electrons does magnesium (Mg) have?
Magnesium (Mg) has 10 core electrons. Core electrons are the electrons in an atom that occupy the inner energy levels, closer to the nucleus. In the case of magnesium, the electron configuration is 1s² 2s² 2p⁶ 3s².
In an atom, electrons occupy different energy levels or orbitals. The innermost energy level, known as the 1s orbital, can hold up to 2 electrons. The next energy level, 2s, can also hold up to 2 electrons, followed by the 2p orbital, which can hold up to 6 electrons. The electrons in the innermost energy levels, specifically the 1s and 2s orbitals, are considered core electrons.
In the case of magnesium (Mg), its electron configuration is 1s² 2s² 2p⁶ 3s². This means that there are two electrons in the 1s orbital, two electrons in the 2s orbital, six electrons in the 2p orbitals, and two electrons in the 3s orbital. The core electrons in magnesium are those in the filled 1s and 2s orbitals, which add up to a total of 10.
Hence, magnesium has 10 core electrons.
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