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Tema [17]
3 years ago
11

‼️Picture Shown‼️Extra points‼️ You will loose your points if your answer is removed :) ‼️So trolls don’t waste your time on thi

s one ‼️
Use the table to calculate the Hf for the following reaction. Please show all work.

C6H6(g) + 15 O2 ——> 12 CO 2 (g) + 6 H2O(g)

Chemistry
1 answer:
insens350 [35]3 years ago
6 0

C6H6 + 15 O2 -- > 12 CO 2 + H2O

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You collect 552 mL of argon gas at 23.0 C. What volume will the gas occupy at 46.0C if the pressure remains constant?
taurus [48]

Answer:

1027.9 mL

Explanation:

Formula P1 x V1 / T1 = P2 x V2 / T2

Fill in what you know

Pressure is constant so no need to put that in making the formula

V1 / T1 = V2 / T2

Voulme 1= 950 mL

Volume 2= ?

Temperature 1 = 25 C

Temperature 2 = 50 C

Explanation:

Formula P1 x V1 / T1 = P2 x V2 / T2

Fill in what you know

Pressure is constant so no need to put that in making the formula

V1 / T1 = V2 / T2

Voulme 1= 950 mL

Volume 2= ?

Temperature 1 = 25 C

Temperature 2 = 50 C

8 0
2 years ago
Which of the following hypotheses is testable by using the scientific method?
Paraphin [41]

Answer:

D

Explanation:

Because it is the only was that you can test using the scientific method.

5 0
2 years ago
If a metal has a density of 8.9 g/ml, and a volume of 200mls, what is the mass?
drek231 [11]

Answer:

<h3>The answer is 1780 g</h3>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume of metal = 200 mL

density = 8.9 g/mL

We have

mass = 8.9 × 200

We have the final answer as

<h3>1780 g</h3>

Hope this helps you

8 0
3 years ago
Calcium has the symbol Ca and its ions have a charge of +2. Chlorine has the symbol Cl and its ions have a charge of -1. In the
hodyreva [135]

Answer:

There are two chloride ions for each calcium ion

Explanation:

The compound has to have an overall neutral charge. Meaning that the positive charges from calcium have to be canceled out by the negative charges of chlorine.

If there are two chloride ions for each calcium ion, the charges would cancel themselves out (2 * -1 would cancel out with +2).

5 0
3 years ago
State whether each of the following will be more soluble in water or hexane i. Butane ii. Ch3cooh iii. K2so4
ioda

Explanation:

Solubility is determined by the principle , "like dissolves like" .

i.e. , if a compound is polar then it will dissolve in a polar compound only , and

if a compound is non - polar then it will dissolve in a non - polar compound only .

Hence , from the question ,

Water is a polar molecule , and hence it will dissolve only the polar molecule , i.e. , from the given options the polar molecule is , iii. K₂SO₄

Hexane , is a non - polar molecules ,  hence it will dissolve only the non polar molecule , i.e. , from the given options the non polar molecule is i. Butane .

3 0
3 years ago
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