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3 years ago

12

In your own words, summarize the steps you took to complete the lab. Explain what the test (independent) variable was, and what

the outcome (dependent) variable was.

1 answer:

alexira [117]3 years ago

5 0

We can’t answer this question without any information. There is no explanation of the lab, nor is there any data.

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What gas law states that pressure and temperature are directly proportional at

Rus_ich [418]

Charles Law is the law that states pressure and temperature are directly proportional at constant volume and miles

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How to convert 2750 mg to g?

choli [55]

Answer:

2.75 g

Explanation:

divide 2750 by 1000

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4 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:

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

NaN₃(s) → Na(s) + 1.5 N₂(g)

<em>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.</em>

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:

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

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3 years ago

Small molecules that bind with self-proteins to produce antigenic substances are called ________. Small molecules that bind with

Leona [35]

Answer:

Haptens.

Explanation:

Haptens are known as small molecules that help to stimulate the production of antibody molecules when attached with a large molecule known as a carrier molecule such as proteins.

Haptens are used to study the mechanism of inflammatory bowel disease to help induce the autoimmune type of responses and allergic contact dermatitis.

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3 years ago

Which of the following actions will induce an electric current?

pentagon [3]

Answer:

a

Explanation:

its the only thing witth electric energy, the rest are magnetic energy

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