Help ! how do I do this

Answers

Answer 1

Answer: I think it is going to be 3

Related Questions

Which of the following is a single replacement reaction?2Al + 6H2O yields 2Al(OH)3 + 3H2 AgNO3 + NaCl yields AgCl + NaNO3 Fe2O3 + 3H2O yields 2Fe(OH)3 CH4 + 2O2 yields CO2 + 2H2O
How does the degree of disorder of a gas compare to that of a liquid or a solid? please explain your answer. this is a chemistry home work.
In the double replacement reaction between Na2SO4 (aq) and BaCl2 (aq), will a precipitate form?No. This reaction produces no insoluble products. Yes. The NaCl will precipitate. Yes. The BaSO4 will precipitate. Yes. Both the NaCl and the BaSO4 will precipitate.
Write the balanced equation for the reaction given below: C2H6 + O2 --> CO2 + H2O. If 16.4 L of C2H6 reacts with 0.980 mol of O2, how many liters of carbon dioxide gas will be produced? What is the limiting reagent? How many oxygen atoms will be in this sample of carbon dioxide? How many moles of the excess reactant will be left over? How many grams of the excess reactant will be left over?
1) Look at the graph. What is the independent variable and the dependent variable?

How many grams of CO2 are in 2.1 mol of the compound?

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Answer: Chemical Reactions,Acids, and Bases Practice

1. 2Na+Br2--->2NaBr

2. 92.4g

3. Volume of the solution

4. Reacts with metals

5. Exothermic

6. Conserved

The molar mass of CO2 is 28 grams per mole. If you aregiven 2.1 moles of CO2 and you are required to find the grams of this compound,simply multiply 28 grams per mole of CO2 by 2.1 moles of CO2 and you will get 58.8grams of CO2.

How many joules are needed to warm 45.0 grams of water from 30.0 degrees C to 75.0 degrees C?

Answers

Answer : The amount of heat needed are, 8464.5 J

Explanation :

Formula used :

$q=m* c* (T_(final)-T_(initial))$

where,

q = heat gained = ?

m = mass of water = 45.0 g

c = specific heat of water = $4.18J/g^oC$

$T_(final)$ = final temperature = $75.0^oC$

$T_(initial)$ = initial temperature = $30.0^oC$

Now put all the given values in the above formula, we get:

$q=45.0g* 4.18J/g^oC* (75.0-30.0)^oC$

$q=8464.5J$

Thus, the amount of heat needed are, 8464.5 J

q=m x Cp x ∆T

m is the mass of the water, Cp is the specific heat of water and ∆T is the change in temperature of the water (final-initial temperature). q is the energy involved in the reaction, measured in joules.

q=(45.0) x (4.184 Jg^-1/°C^-1) x (45°C)
q=8472.6 Joules

What occurs in both fusion and fission reactions?(1) Small amounts of energy are converted into
large amounts of matter.
(2) Small amounts of matter are converted into
large amounts of energy.
(3) Heavy nuclei are split into lighter nuclei.
(4) Light nuclei are combined into heavier nuclei

Answers

Fusion and fission are nuclear reactions that convert a small amount of matter into a large amount of energy.

The fusion reaction is the reaction in which the molecules combine and form energy. The fission reaction is the decomposition nuclear reaction where the matter is degraded into a small entity and the energy is released.

The energy is not converted into matter in both reactions. There is no splitting or combination of nuclei in both reactions.

Thus, the small amount of matter is converted into a large amount of energy is correct.

For more information, refer to the link:

brainly.com/question/4837991

I believe the correct answer from the choices listed above is option 2. Small amounts of matter are converted into
large amounts of energy occurs in both fusion and fission reactions. They are nuclear reactions where a change in the identity or characteristics of an atomic nucleus results when it is bombarded with an energetic particle, as in fission, fusion, or radioactive decay.

An illegal drug stimulates the parasympathetic nervous system, causing the user to appear tranquilized. What could indicate to a paramedic whether or not the person took this drug?A. High blood pressure and drooling
B. Low blood pressure and drooling
C. High blood pressure and dry mouth
D. Low blood pressure and dry mouth

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B. Low blood pressure and drooling. If the user is tranquilized, he would not be able to hinder the production of saliva, leading to drooling. And if the victim was tranquilized, his heart would slow down, not speed up, resulting in a lower blood pressure.

How does the Law of Conservation of Mass relate to changes in physical state? How does it relate to chemical changes?

Answers

The Law of Conservation of Mass states that matter cannot be created nor destroyed. It can only be transformed from one state or substance to another. This means that this law applies to both physical and chemical changes. In physical changes, the substance before and after the phase change still has the same mass. In chemical changes, the mass of reactants will always have the same mass of products and by-products.

Help PLEASE :DElaborate on the changes in molecular motion of particles as they change from solid to liquid to gas.
Question 16 options:
This is the answer >>>>>>>>As the phase changes occur, the freedom of motion of the particles increases.
As the phase changes occur, the freedom of motion of the particles decreases.
As the phase changes occur, the freedom of motion of the particles compresses.
As the phase changes occur, the freedom of motion of the particles is constant.

Answers

Answer:

A) As the phase changes occur, the freedom of motion of the particles increases.

Explanation:

As the phase changes occur, the freedom of motion of the particles increases.

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How many molecules are there in 4.00 moles of glucose