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3 years ago

____ can be found in many forms including in the chemicals found in food

Chemistry

1 answer:

Rzqust [24]3 years ago

4 0

A. Chemical energy can be in many forms including in the chemicals found in food

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Mark all of the things that describe the Solar System.

Olin [163]

Answer:

A,B, and D

Explanation:

Took the test

6 0

3 years ago

What happens when caustic soda is reacted with sulfur

LenaWriter [7]

Answer:

it will explode

Explanation:

the ingredients in sulphate and most sodas dont mix. they will clash, and explode.making a HUGE mess.

8 0

3 years ago

On hot days, you may have noticed that potato chip bags seem to “inflate”, even though they have not been opened. If I have a 25

Taya2010 [7]

The new volume of the bag : 747.43 ml

<h3>Further explanation</h3>

Charles's Law

When the gas pressure is kept constant, the gas volume is proportional to the temperature

$\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}$

V₁=250 ml

T₁=19+273=292 K

T₂=600+273=873 K

$\tt V_2=\dfrac{V_1.T_2}{T_1}\\\\V_2=\dfrac{250\times 873}{292}\\\\V_2=747.43~ml$

7 0

3 years ago

Consider the balanced chemical equation that follows. You are asked to determine how many moles of water you can form from 4 mol

kodGreya [7K]

<u>Answer:</u> The correct answer is $4molH_2\times \frac{2molH_2O}{2molH_2}=4 molH_2O$

<u>Explanation:</u>

We are given:

Moles of hydrogen gas = 4 moles

As, oxygen is given in excess. Thus, is considered as an excess reagent and hydrogen is considered as a limiting reagent because it limits the formation of products.

For the given chemical equation:

$2H_2(g)+O_2(g)\rightarrow 2H_2O(l)$

By Stoichiometry of the reaction:

2 moles of hydrogen produces 2 moles of water molecule.

So, 4 moles of hydrogen will produce = $\frac{2molH_2O}{2molH_2}\times 4molH_2=4mol$ of water.

Hence, the correct answer is $4molH_2\times \frac{2molH_2O}{2molH_2}=4 molH_2O$

6 0

3 years ago

The complete combustion of acetic acid, HC2H3O2(I) to form water, H2O(I), and CO2(g), at constant pressure releases 871.7 kJ of

lbvjy [14]

Answer:

HC2H3O2(I) + O2(g) ---> H2O(I) + CO2(g) ΔH= -72.35 kJ

Explanation:

We know that 5.0 g of acetic acid will contain, 5.0g/60 g/mol = 0.083 moles of acetic acid

Now from the reaction equation;

1 mole of acetic acid evolved -871.7 KJ of heat

0.083 moles of acetic acid will evolve 0.083 * -871.7 = -72.35 KJ

For 5.0 g of acetic acid, we can write;

HC2H3O2(I) + O2(g) ---> H2O(I) + CO2(g) ΔH= -72.35 kJ

3 0

3 years ago