Answer is: 0.102 moles of HCl would react.
Balanced chemical reaction:
2HCl(aq) + Sr(OH)₂ → SrCl₂(aq) + 2H₂O(l).
V(Sr(OH)₂) = 37.1 mL ÷ 1000 mL/L.
V(Sr(OH)₂) = 0.0371 L; volume of the strontium hydroxide solution.
c(Sr(OH)₂) = 0.138 M; molarity of the strontium hydroxide solution.
n(Sr(OH)₂) = c(Sr(OH)₂) · V(Sr(OH)₂).
n(Sr(OH)₂) = 0.0371 L · 0.138 mol/L.
n(Sr(OH)₂) = 0.0051 mol; amount of the strontium hydroxide.
From balanced chemical reaction: n(Sr(OH)₂) : n(HCl) = 1 : 2.
n(HCl) = 2 · n(Sr(OH)₂).
n(HCl) = 2 · 0.0051 mol.
n(HCl) = 0.0102 mol; amount of the hydrochloric acid.
The question involves stoichiometry in a chemical reaction between hydrochloric acid (HCl) and strontium hydroxide (Sr(OH)2). The provided volume and molarity of Sr(OH)2 allow us to calculate the needed moles of HCl, which revolves around a 2:1 stoichiometric ratio. Therefore, to react with 37.1 mL of 0.138 M Sr(OH)2, we need 0.0102 moles of HCl.
Explanation:The subject matter involves a chemical reaction between hydrochloric acid (HCl) and strontium hydroxide (Sr(OH)2). First, we need to identify the stoichiometric ratio between HCl and Sr(OH)2. The chemical equation for their reaction is 2HCl + Sr(OH)2 → SrCl2 + 2H2O, indicating a 2:1 ratio between HCl and Sr(OH)2.
Next, calculate the moles of Sr(OH)2 using the given volume and molarity: 37.1 mL Sr(OH)2 * (1 L/1000 mL) * 0.138 mol/L = 0.0051 mol of Sr(OH)2. Since the ratio of HCl to Sr(OH)2 is 2:1, this means we would need 2 * 0.0051 = 0.0102 moles of HCl for the reaction.
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what is the independent and the dependent variable of this topic: witch liquid has the fastest evaporation rate
please help!
Typically _________ cannot be removed from the atom.
A) electrons
B) neutrons
C) protons
D) tachyons
The correct answer is option (C). Typically protons cannot be removed from the atom.
Protons, along with neutrons, are the subatomic particles that make up the nucleus of an atom. They are held together by the strong nuclear force, which is one of the four fundamental forces of nature. This force is so strong that it overcomes the electromagnetic repulsion between the positively charged protons. As a result, protons cannot be easily removed from the atom through typical chemical reactions or processes.
Electrons, on the other hand, are much less massive and are bound to the atom by the electromagnetic force, which is weaker than the strong nuclear force. Electrons can be removed or added to an atom during chemical reactions, a process that results in the formation of ions.
Neutrons are neutral particles found in the nucleus along with protons. While they are not electrically charged like protons, they still contribute to the mass of an atom and play a role in nuclear reactions. Similar to protons, neutrons are also held in the nucleus by the strong nuclear force and cannot be removed through chemical means.
Tachyons are hypothetical particles that are said to move faster than the speed of light. They are not part of the known structure of atoms and are not considered in the context of typical atomic or chemical processes.
Please help me it's the last question!!
which part of the graph depicts the motion of an object which is at rest?( the bottom is times)
straight segment A
curve segment B
straight segment C
straight segment D
Its the straight segment C because its position is not going up or down, so it is not moving.
The motion of an object at rest is represented by a straight line with a slope of zero in a motion graph, likely represented by straight segment C in this case. Curves and lines with slopes indicate motion with either constant or variable speed. Understanding acceleration representation and the concept of reference frames is also critical while interpreting motion graphs.
Explanation:An object at rest would be represented in a motion graph by a straight line with a slope of zero. This is because the velocity, or speed, of an object at rest remains constant over time, which is zero. In this situation, straight segment C likely represents the motion of an object at rest if it is a horizontal line with no slope. Conversely, curves and lines with slopes indicate motion with either varying or constant velocity.
Additionally, it's important to understand that acceleration (change in velocity over time) can be represented graphically as well. Horizontal lines at some positive or negative value on an acceleration vs. time graph indicate constant acceleration, while variable lines suggest changing acceleration.
Finally, when interpreting such graphs, remember that the concept of reference frames plays a crucial part in understanding motion. As a visual representation, the motion graph describes the motion of an object relative to a defined point of reference. Hence, changing the frame of reference can drastically change the interpretation of the graph.
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Charlie is balancing an equation. She has identified the atoms and counted the number of each in the reactants and products. What would Charlie adjust to make the number of atoms in the reactants the same as the number of atoms in the products? A. coefficients B. subscripts C. superscripts D. parentheses
Answer:
A. coefficients
Explanation:
Balancing the chemical reaction -
As , we know , atoms can not be created and destroyed , hence their is only the transfer of atoms , which take place in a chemical reaction .
Hence , it is important to balance a chemical reaction .
for any reaction , the atoms are balanced by using certain whole number that are placed as a coefficient .
As, is the numbers are placed as superscripts or subscripts, it will alter the chemical structure of the compound .
Hence , the correct answer is A. coefficients .
How much mass does 0.1 mole of neon contain
That would be 2 grams.
well the mass of 0.1 mole or 0.000000000001 centi
A food web illustrates a snake eating a rat. What is the role of the snake in the food web?
A food web illustrates a snake eating a rat. What is the role of the snake in the food web?
A. Decomposer
B.Secondary consumer
C.Primary consumer
D.Producer
Answer:
B.Secondary consumer
Explanation:
A food web is a natural relationship in a food chain among organisms in an ecological community.
A secondary consumer in this system has to do with organisms that eat primary consumers, which means that they consume another animal or organism without producing.
Therefore, in a food web illustrates a snake eating a rat, the role of the snake in the food web is secondary consumer.
How many protons are in the nucleus of an atom that has an atomic number of 23 and a mass number of 51? (answer quick please)
The atomic number is the number of protons, so this atom has 23 protons.
What atom has 19 protons and 20 neutrons
Potassium Does! Hope that helps
Potassium has 19 protrons and 20 neutrons. We can easily tell this because on The Periodic Table, potassium (symbol "K") is number 19. Meaning it has 19 protons and 19 electrons.
scientific notation in standard form
Take the number of the exponent and move the decimal that many places. If it is positive move it left and if it is negative move it right.
For Example:
2.57x10³= 2570
Fill in any access spaces with zero.
Taking that same number to the negative 3 power
2.57x10^-3
0.00257
I put a 0. to show it is a distinctive decimal.
Take the number of the exponent and move the decimal that many places. If it is positive move it left and if it is negative move it right.
For Example:
2.57x10³= 2570
Fill in any access spaces with zero.
Taking that same number to the negative 3 power
2.57x10^-3
0.00257
I put a 0. to show it is a distinctive decimal.
The Hawaiian Islands are home to many endangered species. Why do you think the Hawaii Department of Agriculture is so strict about allowing nonnative species onto the islands?
It is so strict because a foreign species could compete with a native species and drive it to extinction.
The closeness of a measurement to its true value is a measure of its:
Accuracy
Hope this helps!!
Accuracy is a measure of how close a measurement is to its true value, and it is influenced by systematic errors. It differs from precision, which is about the consistency of repeated measurements. An accurate measurement aligns closely with the accepted true value.
Accuracy is a measure of how close a measurement is to its true value. In science, accuracy is crucial because it indicates the degree to which a measured value aligns with the accepted true value of that quantity.
Will give brainliest, points, and more!!
Please help me reword this, I really don't like how I wrote it but I can't think of anything else!
Many every day activities lead to global warming because they produce pollution. When gas is burned in a car, it produces carbon dioxide, a Greenhouse gas. It floats up towards the atmosphere, and becomes the atmosphere. This causes the hat from the sun to get trapped, bouncing from the earth to the atmosphere. The sun doesn't stop producing heat, so the world gets hotter, causing many changes in temperature each decade that goes by.
Do you relizes how many activities lead to global warming? When gas is burned in a car, it produces carbon dioxide (a green house gas). The carbon dioxide then floats up towards the atmosphere and becomes part of the atmosphere. This then causes the heat from the sun to get trapped, bouncing from the atmosphere to the earth. The sun will never stop producing heat which will only lead to the world getting hotter as each decade goes by.
Hope this helps you!
Many every day activities lead to global warming because they produce pollution. When gas is burned in a car, it produces carbon dioxide, a Greenhouse gas. It floats up towards the atmosphere, and makes holes in the atmosphere which lets in those harmful UV radiation and sometimes also adds more atmosphere which could turn earth into the next venous. This causes the heat from the sun to get trapped, bouncing from the earth to the atmosphere. The sun doesn't stop producing heat, so the world gets hotter, causing many changes in temperature each decade that goes by.
hope that helped
Which substances will make a salt when combined? (2 points) Vinegar and antacids Soda and wine Soap and ammonia Fertilizer and detergent
vinegar and antacids.
Which are the products in this chemical reaction? 2C4H10 + 13O2 8CO2 + 10H2O A. 13O2 + 10H2O B. 8CO2 + 10H2O C. 2C4H10 + 13O2 D. 2C4H10 + 8CO2
Answer: The products in the given chemical reaction are [tex]8CO_2\text{ and }10H_2O[/tex]
Explanation:
Reactants are defined as the species which react in the reaction and are written on the left side of the reaction arrow.
Products are defined as the species which are produced in the reaction and are written on the right side of the reaction arrow.
For the given chemical equation:
[tex]2C_4H_{10}+13O_2\rightarrow 8CO_2+10H_2O[/tex]
The reactants of the above reaction are [tex]2C_4H_{10}\text{ and }13O_2[/tex] and the products are [tex]8CO_2\text{ and }10H_2O[/tex]
Hence, the products in the given chemical reaction are [tex]8CO_2\text{ and }10H_2O[/tex]
Answer:
B
Explanation:
Reactants are defined as the species which react in the reaction and are written on the left side of the reaction arrow.
Products are defined as the species which are produced in the reaction and are written on the right side of the reaction arrow.
Which kingdom does a multicellular living organism most likely belong to? Animalia
Archaebacteria
Bacteria
Eukarya
They would be apart of the Eukarya kingdom
Answer:
Comprehensive Science FLVS right, I took the end module exam to. It is Eukarya
Explanation:
What is the primary cause of global wind patterns on earth?
Answer:
Uneven heating
Explanation:
What is the name of the group of elements which has properties of both metals and nonmetals?
Alkaline earth metal
Alkali metal
Metalloids
Noble gases
PLease and thank you!
Answer:
Metalloids
Explanation:
5 Uses of elements or its Compounds: Oxygen
fresh air for breathing
ability to sustane life
treat peoples breathing problem
energy in automobiles
industriel procces
What is study of the origin and structure of the universe
The technical term for the study of the origins of the universe is cosmogony, although informally the term cosmology covers this as well. Answer: The universe is composed of matter and energy.
The origin of the universe, its elements, and its structure are studied in the field of astronomy which is referred to as cosmology. It also studies the evolutionary theory of the universe.
What is cosmology?Cosmology is the astronomical branch that studies and analyzes the evolution and origin of the universe and the celestial or astronomical bodies found in them.
It is a scientific study that explores and researches the physical and chemical properties of the universe and its element based on the hypothesis and observed facts.
It even deals with the human and organismic origin and earth as the only planet that sustains life. The big bang theory is the most exemplified study in cosmology.
Therefore, cosmology is the study of the origin and structure of the universe.
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what atom has 24 neutrons,and 45 mass
It is Scandium or Sc
Hope this is what you were looking for
Which statements describe the six elements found in all living things? Check all that apply.
Carbon is the basis of all living things.
Sulfur is found in bones, where it provides strength.
Nitrogen is found in certain foods.
Oxygen and hydrogen combine with each other to form water.
Only carbon, hydrogen, and phosphorus are found in organic compounds.
Carbon, oxygen, hydrogen, nitrogen, phosphorus, and sulfur are found in organic compounds.
Answer:
oxygen, hydrogen, nitrogen, phosphorus, and sulfur
Explanation:
Oxygen and hydrogen
When methane is burned with oxygen, the products are carbon dioxide and water. If you produce 18 grams of water from 8 grams of methane and 32 grams of oxygen, how many grams of carbon dioxide were produced in the reaction?
When methane is burned with oxygen, the products are carbon dioxide and water. If you produce 18 grams of water from 8 grams of methane and 32 grams of oxygen, how many grams of carbon dioxide were produced in the reaction?
Solution:
32 - 18 = 14
14 + 8 = 22
Answer:
22
Complete the passage to describe how electrons are represented in electron dot diagrams. The maximum number of dots an electron dot diagram can have is( A:two, B:Four, C:Six, D:Eight) The maximum number of dots drawn on a side of a chemical symbol in an electron dot diagram is ( A:two, B:Four, C:Six, D:Eight)
The maximum number of dots an electron dot diagram can have is EIGHT.
The maximum number of dots drawn on a side of a chemical symbol in an electron dot diagram is TWO.
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The maximum number of dots an electron dot diagram can have is (D:Eight). The maximum number of dots drawn on a side of a chemical symbol in an electron dot diagram is (A:two)
A dot diagram is a representation of the number and arrangement of electrons in the outermost shell of an atom usually a pair of electrons at the four cardinal points around the symbol.By convention,
The maximum number of dots an electron dot diagram can have is (D:Eight)The maximum number of dots drawn on a side of a chemical symbol in an electron dot diagram is (A:two)Read more:
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A piece of iron has a volume of 11.6 cm3 and a mass of 63.5g what is its density?
The density of an object, a fundamental principle in physics, is calculated by dividing its mass by its volume. In the case of the iron piece that has a mass of 63.5g and a volume of 11.6 cm3, its density is calculated to be 5.47 g/cm3.
Explanation:The density of an object is calculated by dividing its mass by its volume. This concept is a fundamental principle in physics. In this case, the piece of iron has a mass of 63.5g and a volume of 11.6 cm3. Thus, the density can be calculated using the formula density = mass/volume.
So, density = 63.5g / 11.6 cm3 = 5.47 g/cm3. Therefore, the density of the given piece of iron is 5.47 g/cm3.
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Which of the following best describes a person doing science? A. Dominick uses a computer to do his math homework. B. Lindsay measures the sizes of the craters on the Moon. C. Isabel invents a new kind of doorknob. D. Murray randomly predicts the result of a coin toss.
Answer:
B. Lindsay measures the sizes of the craters on the Moon.
Explanation:
Science is about making a hypothesis, doing experiments, making observations, recording data, analyzing data, interpretation of the data, and writing meaningful conclusion. Here Lindsay measures the sizes of the craters on the Moon, which falls under making observations and recording data so Lindsay is ding experiments.
Dominick is simply using technology, Murray is simply guessing a number and Isabel’s invention falls under engineering.
the best way seperate salt fron wateris with the use of
A. oil.
b. rubbing alcohol
c. a magnet
d. heat
You can boil or evaporate the water and the salt will be left behind as a solid. If you want to collect the water, you can use distillation. This works because salt has a much higher boiling point than water. One way to separate salt and water at home is to boil the salt water in a pot with a lid. So, I would say maybe oil.
The way metals surface reflects light is called
All matter is made up of atoms. Which sentence correctly describes atoms?
a
An atom is the smallest particle of an element.
b
Atoms are the smallest particle of a nucleus.
c
An atom is a substance that has been cut in half.
d
All substances are made of the same atoms.
An atom is the smallest unit of matter that retains all of the chemical properties of an element. Atoms are made up of smaller particles called subatomic particles, including protons, neutrons, and electrons. Different types of atoms correspond to the different elements on the periodic table.
Explanation:Among the options you provided, option 'a' most accurately describes an atom: An atom is the smallest particle of an element. Indeed, an atom is the smallest unit of matter that retains all of the chemical properties of its corresponding element. For example, one gold atom retains all of the properties of the element gold.
Atoms themselves are composed of even smaller particles called subatomic particles, including protons, neutrons, and electrons. These subatomic particles contribute to the atom's mass and unique properties. The number of protons and neutrons gives mass to the atom while the number and arrangement of electrons determine the element's properties.
It's also important to note that while all matter is made up of atoms, not all substances are made of the same atoms as suggested by option 'd'. Each type of atom corresponds to a specific element on the periodic table, and these different types of atoms can combine in various ways to form all the diverse substances we see in our universe.
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the volume of liquid can be measured with? A. graduated cylinder B. pan balance C. scale D. metric ruler
a: is the correct anwser
Final answer:
A graduated cylinder is the correct tool for measuring the volume of liquid, with readings taken at the meniscus's lowest point. Pan balances and scales measure mass, not volume, and metric rulers are for measuring length.
Explanation:
The student asked which tool could be used to measure the volume of a liquid. The correct answer is a graduated cylinder. Graduated cylinders are precision instruments commonly used in labs to measure liquid volumes accurately. They can measure in units such as milliliters (mL) and centiliters (cL), offering flexibility for small or large amounts.
To use a graduated cylinder, you should first place it on a level surface and then pour the liquid into the cylinder. Observe the liquid level and make a reading at the bottom of the meniscus, the curve seen at the top of the liquid layer. The meniscus occurs because of the surface tension of the liquid in contact with the container. The correct volume will be where the lowest point on the meniscus aligns with the cylinder's measuring scale.
Other instruments such as a pan balance, scale, and metric ruler are not suitable for measuring liquid volumes. A pan balance and a scale are designed to measure mass, and a metric ruler is typically used for measuring lengths.
A atom neutral (one with 0 extra charge)?
______________________________________________________________________________
A +ion (positive ion, one with extra positive charge)? ______________________________________________________________________________
A - ion (negative ion, one with extra negative charge)?
A neutral atom has equal number of protons and electrons. A +ion or cation is an atom that has lost electrons, thus having a net positive charge. A -ion or anion is an atom that has gained electrons, resulting in a net negative charge.
Explanation:An atom is considered neutral when it has an equal number of protons and electrons. The protons carry a positive charge and the electrons carry an equal magnitude of negative charge, so when the numbers are equal, their charges cancel each other out, leading to a balanced, or 'neutral', overall charge.
A +ion, or cation, is an atom (or a molecule) that has lost one or more electrons. Since electrons have negative charge, the loss of electrons leads to an excess of positive charge, making the atom or molecule a positive ion.
Conversely, a -ion, or anion, is an atom (or a molecule) that has gained one or more electrons. Since electrons carry negative charge, the gaining of electrons leads to an excess of negative charge, making the atom or molecule a negative ion.
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