The object, a bowl of mixed fruit, is a mixture because it combines different types of fruit. In chemistry, mixtures are made by combining two or more different materials without causing a chemical reaction. Hence, the distinct properties of each type of fruit in the mixture are maintained.
Explanation:The object in question here - a bowl of mixed fruit - is considered a mixture. In chemistry, a mixture is a substance made by combining two or more different materials in such a way that no chemical reaction occurs. Therefore, because the bowl contains different types of fruit, it qualifies as a mixture rather than a pure substance.
A pure substance, on the contrary, would consist of a single type of particle. An example of a pure substance would be something like a bowl of pure water, because it only contains water molecules.
So, to put it simply, Jack's bowl of mixed fruit is a mixture because it's composed of different types of fruit that have not chemically reacted with one another. The object demonstrates one of the key attributes of mixtures: its components maintain their individual properties.
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Why do you think it is
important for cattle ranchers to understand the basics of chemistry?
Answer:
Because chemistry is the science that studies the properties of the substances and the reactions they undergo, which is the basis of metabolism (chemical reactions inside the body) and the health science.Explanation:
it is important for cattle ranchers to understand the basics of chemistry because feeding and health of their valuable animals rely in the principles of chemical science.
Understanding what elements or compounds animal food must contain for the animals grow better is an esential part of animal husbandry.
The same can be said about the vitamins, drugs, antibiotics, and medicines in general, needed by the livestock to be healthy and cure diseases.
Chemistry involves the study of the substances, their propeties, and how to combine them (chemical reactions) which is the basis of the nutritrion and medicine; two essential parts of cattle breeding.
The number of moles in 4.5 x 1024 atoms of oxygen is
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 7.475 moles are present in 4.5 x 10²⁴ atoms of oxygen.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
Mathematically, the formula for the number of moles can be given as
number of mole =given number of atoms ÷ 6.022×10²³(Avogadro number)
number of atoms of oxygen=4.5 x 10²⁴atoms
Substituting all the given values in the above equation, we get
number of atoms of oxygen=(4.5 x 10²⁴)/(6.02 x 10²³)
number of atoms of oxygen= 7.475 mole
Therefore, 7.475 moles are present in 4.5 x 10²⁴ atoms of oxygen.
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What atom has 26 protons and 24 electrons
Answer:
iron (Fe)
Explanation:
Since an atom is electrically neutral, so the atom has 26 electrons also. Ion has 24 electrons, so it has experienced loss of 2 electrons. So, charge on ion is +2. Also, the element with 26 protons (26 atomic number) is iron (Fe).
Complete and balance the following redox reaction in acidic solution As(s) -> H 2 AsO 4 (aq)+ASH 3 (s)
Answer:
12H2O + 8As = 3H2AsO4- + 5AsH3 + 3H+
Explanation:
- This is balanced in an acidic solution and should be correct.
Which of these did your answer include?
Each hydrogen atom is bonded to the oxygen atom with a single bond.
The oxygen atom has two lone pairs.
The molecule is bent.
Oxygen is more electronegative than hydrogen.
Each O-H bond is polar.
The molecule is asymmetrical.
The asymmetry and the polar bonds produce an overall molecular dipole.
The oxygen atom has a partial negative charge, and the hydrogen atoms have a partial positive
charge.
The oxygen atom has a partial negative charge and the Hydrogen atoms have a partial positive charge
The O2 atoms have a covalent bonding and are attracted to the electrons more strongly.
The sharing of the electrons gives them water molecules a slightly negative change near the O2 atom. A slight positive change near the H2. Hence the option D is correct.Learn more about the did your answer includes.
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The cell wall of a fungi is made of
what?
A) cellulose
B) chitin
C) cytoplasm
Answer:
B. Chitin
Explanation:
Simple, chitin
Question 9
1 pts
A gas of 3.4 moles occupies a volume of 0.046 Lat 298 K. What is the pressure
in kPa?
O 4.40 x 100 kPa
O 9.45 x 103 kPa
O 6.1 x 102 kPa
O2.1x 105 kPa
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Answer:
2.1 x 105 kPa
Explanation:
Answer:
2.1 x 105 kPa
Explanation:
just took a quiz got it right so good luck!! :)
What state of matter has the strongest intermolecular forces?
A) solid
B) none of these choices
C) liquid
D) gas
Answer:
Solid
Explanation:
As the temperature continues to drop, the matter forms a solid. Due to the solid's low kinetic energy, particles have no "time" to move around, the particles have more "time" to be attracted. Therefore, solids have the strongest intramolecular forces (because they have the strongest attraction).
Baking Soda Acidic, alkaline, or neutral?*
O
Acidic
Alkaline
Neutral
Answer:
Baking soda, also known as sodium bicarbonate, is a base
Baking soda, or sodium bicarbonate, is an alkaline substance with a pH greater than 7, indicating its basic properties. It reacts with acids in baking to produce carbon dioxide, helping the dough to rise. The correct answer is B) Alkaline.
Sodium bicarbonate, commonly known as baking soda, is a chemical compound with the formula [tex]NaHCO_3[/tex]. It is a white solid that is crystalline but often appears as a fine powder. Baking soda is not neutral or acidic; it has alkaline properties.
When baking soda is dissolved in water, it slightly raises the pH of the solution, making it basic. The pH scale, which measures how acidic or alkaline a substance is, typically ranges from 0 (very acidic) to 14 (very alkaline), with 7 being neutral. Sodium bicarbonate usually has a pH greater than 7; therefore, it can help neutralize acids.
When used in baking, baking soda acts as a base and usually reacts with an acidic ingredient (like lemon juice or buttermilk).
This reaction produces carbon dioxide gas, which causes dough or batter to expand and "rise," giving baked goods their porous texture. The equation for its reaction with an acid is as follows: [tex]NaHCO_3(s) + H^+[/tex] → [tex]Na^+ + H_2O + CO_2[/tex]. This demonstrates baking soda’s role as a base in neutralizing acids and producing carbon dioxide and water.
PLS HELP IF YOU WANT A BRAINLIEST Amelia makes a Venn diagram to compare the advantages and disadvantages of asexual reproduction and sexual reproduction.
Which label belongs in the region marked X?
A. Less competition for resources
B. Faster
C. No variation in DNA
D. Less energy required
Answer:
d. less energy required
Explanation:
it said it in my book and i took the edg quiz
why does poop turn blue after you bleach it
Enzymes and activators in the poop might cause the bleach to decompose quickly, releasing chlorine gas. Otherwise, it would have the effect making your toilet smell like a swimming pool, which might be a worthwhile improvement.
If 0.600 moles of Nitrogen gas is collected at a pressure of 234 kPa in a
container which has a volume of 12.0 L, what is the temperature of the
nitrogen gas in the container? Express the temperature in Kelvin. (use the R
value for kPa)
563.18 K
O 4680 K
O 52 atm
O 337.91K
Answer:
563.18 K
General Formulas and Concepts:
Gas Laws
Ideal Gas Law: PV = nRT
P is pressure (in kPa)L is volume (in L)n is molesR is gas constantT is temperature (in K)Explanation:
Step 1: Define
[Given] n = 0.600 mol N₂
[Given] P = 234 kPa
[Given] L = 12.0 L
[Given] R = 8.314 L · kPa · mol⁻¹ · K⁻¹
[Solve] T
Step 2: Solve for T
Substitute in variables [Ideal Gas Law]: (234 kPa)(12.0 L) = (0.600 mol)(8.314 L · kPa · mol⁻¹ · K⁻¹)TMultiply: 2808 kPa · L = (4.9884 L · kPa · K⁻¹)T[Division Property of Equality] Isolate temp: T = 562.906 KTopic: AP Chemistry
Unit: Gas Laws
What groups of elements do not have a charge and why
Answer:
Noble gases because they have a full outer shell of electrons.
Explanation:
Noble gases usually called inert gases are generally non reactive gases. They belong to group 18 elements.They tend to not gain the electron or not give up a electron as they have full valence shells. Because they already have full valence shell and therefore full outer energy level, they are very stable and hardly react with any other elements.
If 27.9 grams of calcium carbonate reacts with excess HCl, how many moles of calcium chloride are produced
Answer:
[tex]\large \boxed{\text{0.2797 mol}}[/tex]
Explanation:
We must do the conversions:
mass of CaCO₃ ⟶ moles of CaCO₃ ⟶ moles of CaCl₂
We will need a chemical equation with masses and molar masses, so, let's gather all the information in one place.
Mᵣ: 100.09 110.98
CaCO₃ + 2HCl ⟶ CaCl₂ + CO₂ + 2HCl
m/g: 27.9
(a) Moles of CaCO₃[tex]\text{Moles of CaCO}_{3} = \text{27.9 g CaCO}_{3}\times \dfrac{\text{1 mol CaCO}_{3}}{\text{100.09 g CaCO}_{3}}= \text{0.2787 mol CaCO}_{3}[/tex]
(b) Moles of CaCl₂[tex]\text{Moles of CaCl}_{2} =\text{0.2787 mol CaCO}_{3} \times \dfrac{\text{1mol CaCl}_{2}}{\text{1 mol CaCO}_{3}} = \text{0.279 mol CaCl}_{2}[/tex][tex]\text{The reaction produces $\large \boxed{\textbf{0.279 mol}}$ of CaCl}_{2}[/tex]
Magnesium hydroxide + hydrogen sulfate
Answer:
Below.
Explanation:
Magnesium hydroxide + Hydrogen Sulphate --> Magnesium Sulphate + Water
The balanced equation:
Mg(OH)2 + H2SO4 ---> MgSO4 + 2H2O
Write the reduction reaction of glucose to form sorbitol. List and explain the side effects caused by too much sorbitol consumption.
Answer:
The product of reduction of glucose is sorbitol
The side effects caused by too much sorbitol consumption include: Diarrhea, Nausea, stomach discomfort
Explanation:
Please find attached the reaction of glucose with NADPH to produce sorbitol
Answer:
Glycytols or alditols (also called alcoholic sugars) are characterized by being a set of sweet-tasting organic chemical compounds of the polyol family. These compounds are chemically considered hydrogenated carbohydrates whose carbonyl group (aldehyde, ketone, sugar reducer) has been reduced to a primary or secondary hydroxyl group (i.e. an alcohol). Alcoholic sugars have the general formula H (HCHO) n + 1H, while sugars have H (HCHO) nHCO. Food applications are used in modifications as sweeteners to replace sugar (sucrose). Glycytols contain very low calorie contents, and their low fermentability makes them non-cariogenic, that is why it can be found in the package leaflet of some pediatric toothpastes, or Asian chewing gum itself.
Explanation:
When taking too much sorbitol (between 20 to 50 grams) it can have many negative effects by causing gas and abdominal pain and even become a very powerful laxative that even causes diarrhea.
In diabetic patients, it is usually used as a sweetener and prevents spikes in blood glucose because it generates the accumulation of water in the walls of the intestines, delaying the absorption of glucose
* If you found a fossil like the one pictured above in an open grassy field, what could you infer about this particular part of Earth
during much earlier times?
Earth's earlier environment in this particular area was covered with water.
Earth's earlier environment in this particular area was most likely a deep
canyon
Earth's earlier environment in this particular area was frozen like the
ground coverings of a tundra.
Earth's earlier environment in this particular area was also similar to the
open, grassy field you see today.
Answer:
A
it on the explanation for ms yoder
This diagram shows the shift in the spectrum for hydrogen light from several different sources in the universe compared to a laboratory reference. What is the best argument you can make from this data?
A) More distant galaxies are hotter than nearby stars
B) More distant galaxies are moving toward us faster than a nearby star
C) More distant galaxies are moving at the same rate as nearby stars
D) More distant galaxies are moving away faster than nearby stars
Answer:
Many stars and distant galaxies move at varying speeds compared to each other.
Explanation:
All statements are contradictory, so play it safe and declare different energy levels.
Answer:
I think the answer is A) More distant galaxies are hotter than nearby stars
Explanation:
Hope this helps :)
Write the balanced COMPLETE ionic equation for the reaction when Na₂CO₃ and AgNO₃ are mixed in aqueous solution. If no reaction occurs, write only NR.
Final answer:
The balanced complete ionic equation for the reaction between Na₂CO₃ and AgNO₃ in aqueous solution is 2Na+ + 2NO₃- + CO₃²- + 2Ag+ → 2Na+ + 2NO₃- + Ag₂CO₃. The sodium and nitrate ions can be eliminated from the equation since they appear unchanged on both sides. The net ionic equation is CO₃²- + 2Ag+ → Ag₂CO₃.
Explanation:
Balanced Complete Ionic Equation:
2Na+(aq) + 2NO3-(aq) + CO32-(aq) + 2Ag+(aq) → 2Na+(aq) + 2NO3-(aq) + Ag2CO3(s)
In this reaction, the sodium ion (Na+) and the nitrate ion (NO3-) appear unchanged on both sides of the equation, so they can be eliminated from the reaction.
Net ionic equation:
CO32-(aq) + 2Ag+(aq) → Ag2CO3(s)
What type of intermolecular bond occurs between two water molecules?
A) dipole to dipole
B) hydrogen
C) ionic
D) polar covalent
Elements with an oxidation number of one include which of the following
The answer is C. Potassium and D. Lithium.
The correct answers to which elements have an oxidation number of 1 are C. Potassium and D. Lithium, as both are group 1 alkali metals that typically form ions with a +1 charge.
Both potassium and lithium belong to the group 1 elements of the periodic table, also known as the alkali metals. These metals typically have a +1 oxidation state when forming compounds. Potassium (K) for example, readily loses one electron to form a K+ ion, also known as a monovalent cation. Similarly, lithium (Li) will also lose one electron to form an oxidation state of +1.
Magnesium (Mg) and Calcium (Ca), on the other hand, form ions with a 2+ charge, indicating an oxidation state of +2. For instance, in [tex]MgCl_2[/tex], magnesium has an oxidation number of +2. Therefore, options A. Magnesium and B. Calcium do not have an oxidation number of 1 and are not correct answers to the question.
What kind of force does not allow movement to occur?
Humans first appeared in the _____ period.
A) Mesozoic
B) Paleozoic
C) Jurassic
D) Cenozoic
Answer:
They first appeared in the fossil record around 66 million years ago, soon after the Cretaceous–Paleogene extinction event that eliminated about three-quarters of plant and animal species on Earth, including most dinosaurs.
Explanation:
Answer:
A or b I learned this in history
If 251 mL of 6.0 M H2SO4 is diluted to 500. mL, what is its new molarity?
Answer:
3.0MExplanation:
The dilution formula is:
[tex]M_1\times V_1=M_2\times V_2[/tex]
Where M₁ and M₂ are the molar concentrations and V₁ and V₂ are the volumes of the concentrated and the diluted solutions.
Substitute:
M₁ = 6.0MM₂ = unknownV₁ = 251 mLV₂ = 500. mL[tex]6.0M\times 251ml=M_2\times 500.ml[/tex]
Clear M₂ and compute:
[tex]M_2=6.0M\times 251ml/500.ml\approx3.0M[/tex]
True of false: The land absorbs more energy from the sun than the water does.
Answer: True
Explanation:
Land surfaces absorb much more solar radiation than water. This is due to the fact that most land surfaces are darker than water which of course means more absorption of solar radiation and heat.
What volume of nitrogen gas (N2) is equal to 3.42x1022 molecules of this substance?
Answer : The volume of nitrogen gas equal to [tex]3.42\times 10^{22}[/tex] molecules of this substance is, 1.27 liters.
Explanation :
First we have to calculate the moles of nitrogen gas.
As, [tex]6.022\times 10^{23}[/tex] molecules present in 1 mole of nitrogen gas
So, [tex]3.42\times 10^{22}[/tex] molecules present in [tex]\frac{3.42\times 10^{22}}{6.022\times 10^{23}}=0.0568[/tex]mole of nitrogen gas
Now we have to calculate the volume of nitrogen gas.
As we know that, 1 mole of substance occupies 22.4 L volume of gas at STP.
As, 1 mole of nitrogen gas occupies 22.4 L volume of nitrogen gas
So, 0.0568 mole of nitrogen gas occupies [tex]0.0568\times 22.4=1.27L[/tex] volume of nitrogen gas
Therefore, the volume of nitrogen gas equal to [tex]3.42\times 10^{22}[/tex] molecules of this substance is, 1.27 liters.
Answer:
1.27
Explanation:
Why are plastics called polymers? Explain the nature of a polymer.
Hurry please!
Answer:
Plastics and natural materials such as rubber or cellulose are composed of very large molecules called polymers .
Explanation:
hi
Which substance would be able to pass through filter paper when added to water?
Answer:
The salt and water will pass through the filter paper while the large, undissolved pieces of sand will be trapped by the filter paper. The liquid that passes through the filter paper and is collected in the beaker is called the filtrate.
Explanation:
If you look on google it will give you the answer: Salt.
Which process takes the
longest to occur?
freezing
melting
boiling
heating the solid
a solid sample of oil is warmed until it turns into a liquid. which property of the oil will decrease?
I think the answer is it turnes into a gas. Hope it helps! :) Asnwer is density.
A solid sample of oil is warmed until it turns into a liquid. Density is the property of the oil will decrease.
What do you mean by density ?Density is the measurement of how tightly a material is packed together. It is defined as the mass per unit volume. Density Symbol: D or ρ Density Formula: ρ = m/V, where ρ is the density, m is the mass of the object and V is the volume of the object.
As temperatures rose, the density of all oils decreased. The temperature coefficients of density change differed slightly between oils. The density differentials between oil and water, as well as their temperature coefficients, varied significantly between oils.
Oil is denser than alcohol but denser than water. Because the molecules that make up oil are larger than those that make up water, they cannot pack as tightly as water molecules can. They occupy more space per unit area and have a lower density.
Thus, Density is the property of the oil will decrease.
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