The ratio of hydrogen atoms to sulfur atoms in sulfuric acid, H2SO4 is

Answers

Answer 1

Answer: The question is asking the ratio of H to S in H2SO4.
In the following molecular formula, there are 2 hydrogen and 1 sulfur.
This means that the ratio is 2:1.

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The reactants in a chemical reaction contain 900 J of chemical energy. The products of the reaction contain 9000 J of chemical energy. Which statement best describes this chemical reaction? The reaction absorbs 9000 J of energy from the surroundings as it proceeds. The reaction releases 9000 J of energy to the surroundings as it proceeds. The reaction absorbs 8100 J of energy from the surroundings as it proceeds. The reaction releases 8100 J of energy to the surroundings as it proceeds. The answer is C
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Which of the following answer choices best describes J. J. Thomson's plum-pudding model?An atom is surrounded by a firm outer shell and contains positively charged particles in its core.An atom is surrounded by a firm outer shell and contains negatively charged particles in its core.An atom consists of positively charged matter that contains negatively charged particles.An atom consists of negatively charged matter that contains positively charged particles.

Answers

The statement that best describes J. J. Thomson's plum-pudding model is; an atom consists of positively charged matter that contains negatively charged particles.

The model of J. J. Thomson looked at the atom merely as a ball of positive charges into which negative charges were embedded.

This model was propounded by J. J. Thomson in the year 1897. This model began the journey into empirical observation of the structure of the atom.

Thompson further carried out his experiments using a cathode ray tube and propounded the model shown in the image attached to this answer.

Learn more: brainly.com/question/2437167

Answer:

An atom consists of positively charged matter that contains negatively charged particles.

Explanation:

What is free-fall acceleration near earth's surface

Answers

free fall is when the only force acting on an object is gravity

Near Earth's surface, the distance between the object that is falling and the center of Earth does not change very much. Thus, the force given by the law of universal gravitation depends only on the mass of the object that is falling.

The molar heat of vaporization of water is 40.7kJ/mol. How much heat must be absorbed to convert 50.0 grams of liquid water at 100oC to steam at 100oC?A) 1.46 X 10 kJ
B) 1.13 X 102kJ
C) 2.04 X 103kJ
D) 3.66 X 104kJ

Answers

During a phase change the temperature does not change since all of the heat is being absorbed in order to break the intermolecular forces. Due to that, the formula will not need to have T in it and is actually q=nΔH(v).
n=the number of moles (in this case 2.778mol of water since you divide 50g by 18g/mol).
ΔH(v)=the molar heat of vaporization (in this case 40.7kJ/mol).
q=the heat that must be absorbed
q=2.778mol×40.7kJ/mol
q=113.1kJ
Therefore the water needs to absorb 1.13×10²kJ.

I hope this helps. Let me know if anything is unclear.

Gases and liquids will both expand to fill their container true or faulse

Answers

gasses do not liquid can because it is not a gas

Gasses do expand because they have no absolute volume
Liquids do not expand but will fill a container because they have no set shape just a set volume

A similarity between the separation of powers the system of checks and balances and federalism is

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Hi There! :)

A similarity between the separation of powers the system of checks and balances and federalism is?

A similarity between the separation of powers, the system of checks and balances, and federalism is that they all are meant to keep the federal government from becoming too powerful and tyrannical.

Answer:

Federalism and Separation of Powers policies seek for decentralised the power and avoid tyranny.

Explanation:

Separation of Powers, according to Montesquieu, is a policy that allow the country to have democracy, because this separation is constituted by three main autonomous powers: judicial, executive and legislative. Each institution can judge others, so this way whole nation power is not concentrated in one point.

In this way, Federalism is alike, because this policy is about having a central government (Federal), and regional governments (States) in a whole political system. So, each regional government has their own rules and freedom to their jurisdiction.

What is the approximate tilt of the earth?
18°
23°
45°
60°

Answers

The answer is 23.5° but I guess 23° is closest

Not the approximate tilt the exact is 23 1/2 degrees

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