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3 years ago

I have to make question longer this question

Chemistry

2 answers:

neonofarm [45]3 years ago

7 0

Answer:

Of course I breathe air.

Explanation:

I'm not a fish.

OleMash [197]3 years ago

5 0

Answer:

$ummmmmmm \: yes \:$

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Which of the following is released during cellular respiration?: a. oxygen b. air c. energy d. lactic acid

mezya [45]

Explanation:

lactic acid because of the acid it will release in the cellular respiration

6 0

3 years ago

The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of sodium azide, which produces

Oxana [17]

Answer:

1. NaN₃(s) → Na(s) + 1.5 N₂(g)

2. 79.3g

Explanation:

1. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid sodium azide (NaN₃) into solid sodium and gaseous dinitrogen.

NaN₃(s) → Na(s) + 1.5 N₂(g)

2. Suppose 43.0L of dinitrogen gas are produced by this reaction, at a temperature of 13.0°C and pressure of exactly 1atm. Calculate the mass of sodium azide that must have reacted. Round your answer to 3 significant digits.

First, we have to calculate the moles of N₂ from the ideal gas equation.

$P.V=n.R.T\\n=\frac{P.V}{R.T} =\frac{1atm.(43.0L)}{(0.08206atm.L/mol.K).286.2K} =1.83mol$

The moles of NaN₃ are:

$1.83molN_{2}.\frac{1molNaN_{3}}{1.5molN_{2}} =1.22molNaN_{3}$

The molar mass of NaN₃ is 65.01 g/mol. The mass of NaN₃ is:

$1.22mol.\frac{65.01g}{mol} =79.3g$

5 0

3 years ago

When a mixture of limestone and clay is heated in a rotary kiln cement is produced. Burning a mixture of methane and air heats t

evablogger [386]

Carbon Reasons: (1) Quicklime is produced by the thermally decomposing limestone, which produces carbon dioxide as a byproduct

CaCo3 --> CaO+CO2

(2) Since this reaction requires a large amount of energy, fuel (usually coal) is burned, which produces carbon dioxide

5 0

3 years ago

The formula equation of Sodium carbonate + hydrochloric acid

dusya [7]

Answer:

the reaction is: Na2CO3 + 2HCl ===》 2NaCl + H2O + CO2(g)

6 0

3 years ago

BF3 type of compound

USPshnik [31]

Answer:

Corresponds to a covalent compound.

Explanation:

Both Boron and Fluorine are nonmetals, forming a covalent bond, the result of which is the boron trifluoride compound (BF3). This is a highly toxic gas.

It is synthesized by the reaction between hydrogen fluoride and boron oxide:

B2O3 + 6 HF → 2 BF3 + 3 H2O

6 0

4 years ago