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3 years ago

What is 2 H2 + 1 O2 = 2 H2O balanced?

Chemistry

1 answer:

jeka57 [31]3 years ago

3 0

Answer:

Yes, that is correctly balanced. 2 H2 + 1 O2 = 2 H2O is already balanced.

Explanation:

If you count up the number of hydrogen atoms and oxygen atoms on each side, you will see that they are equal:

2 H2 + 1 O2 (4 hydrogen and 2 oxygen) = 2 H2O (4 hydrogen and 2 oxygen).

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If 1.00 mol of argon is placed in a 0.500-L container at 20.0 ∘C , what is the difference between the ideal pressure (as predict

antiseptic1488 [7]

Hey There!

ideal gas law :

PV = nRT

P = nRT/V

P = (1*0.082)(18+273)/(0.5) = 47.724 atm

For VDW :

(P + a(n/V)²)(V - nB) = nRT

P = nRT/(V - nB) - a(n/V)²

P = 1*0.082*(18+273) / (0.5-1*0.03219) - 1.345*( 1/0.5 )² = 45.62

P = 45.62 atm

Pdif = P2-P1 = 47.724 - 45.62 = 2.104 atm

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3 years ago

If the earth was a guava fruit, the space where the seeds are would be the core/mantle

Bezzdna [24]

Good analysis lol ...

8 0

3 years ago

Read 2 more answers

There are eight primary amines with the molecular formula C5H13N.

emmainna [20.7K]

Answer:

1-Pentanamine

2-Pentanamine

3-Pentanamine

3-methyl-2-butanamine

3-methyl-1-butanamine

2-methyl-1-butanamine

2-methyl-2-butanamine

2,2-dimethyl-1-propanamine

2-pentanamine

3-methyl-2-butanamine

2-methyl-1-butanamine

Explanation:

Amines are organic compounds derived from ammonia by replacing the hydrogen atoms, one at a time with carbon-containing groups. The functional groups are R-NH₂, R₂-NH, and R₃-N

Amines are classified into primary, secondary, or tertiary according to the number of substituted hydrogen.

From the given question.

A compound with the molecular formula C₅H₁₃N was given;

The possible eight structural formula of the compound and those that exhibit chirality can be seen in the attached image below.

7 0

4 years ago

Read the Safety Data Sheet of hydrogen peroxide to identify the recommended way to store this substance. Choose one:_______.

Lena [83]

Answer:

The correct option is C.

In a tightly closed container in a dry and well-ventilated place

Explanation:

Hydrogen peroxide should be store in a tight closed container and ventilated area because it is an oxidizing agent and it's has oxidizing characteristics. If to is exposed or the bottle lid is broken and exposed it can react and liberate oxygen and heat. It can react with the air and chemical it is exposed with. This will make it to be less effective and there will be a change in it's composition.

5 0

3 years ago

What is the mass of 61.9 L of oxygen gas collected at STP?

Tcecarenko [31]

Answer:

D. 44.2 g O₂

General Formulas and Concepts:
Gas Laws

STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

Stoichiometry

Dimensional Analysis
Mole Ratio

Explanation:

Step 1: Define

Identify given.

61.9 L O₂ at STP

Step 2: Convert

We know that the oxygen gas is at STP. Therefore, we can set up and solve for how many moles of O₂ is present:

$\displaystyle 61.9 \ \text{L} \ \text{O}_2 \bigg( \frac{1 \ \text{mol} \ \text{O}_2}{22.4 \ \text{L} \ \text{O}_2} \bigg) = 2.76339 \ \text{mol} \ \text{O}_2$

Recall the Periodic Table (Refer to attachments). Oxygen's atomic mass is roughly 16.00 grams per mole (g/mol). We can use a mole ratio to convert from moles to grams:

$\displaystyle 2.76339 \ \text{mol} \ \text{O}_2 \bigg( \frac{16.00 \ \text{g} \ \text{O}_2}{1 \ \text{mol} \ \text{O}_2} \bigg) = 44.2143 \ \text{g} \ \text{O}_2$

Now we deal with sig figs. From the original problem, we are given 3 significant figures. Round your answer to the exact same number of sig figs:

$\displaystyle 44.2143 \ \text{g} \ \text{O} \approx \boxed{ 44.2 \ \text{g} \ \text{O}_2 }$

∴ our answer is letter choice D.

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Topic: AP Chemistry

Unit: Stoichiometry

6 0

2 years ago