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3 years ago

PLEASE HELP! 50 POINTS IF CORRECT!

Chemistry

2 answers:

Leviafan [203]3 years ago

8 0

I believe the answer is either B or D. The earth axis is only slightly tilted and the equator goes opposite in a sense to the axis

Daniel [21]3 years ago

4 0

The diagram below represents the season changes on earth caused by the relationship between earth the earth and the sun.

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Mention the various ways by which soluble and insoluble salts are prepared

LUCKY_DIMON [66]

Answer:

Explanation:

soluble and insoluble salts are prepared by processes like neutralization reactions, simple displacement reactions and double displacement reactions.

4 0

3 years ago

At standard temperature and pressure. 0.500 mole of xenon gas occupies

ANEK [815]

Answer:

0.500 mole of Xe (g) occupies 11.2 L at STP.

General Formulas and Concepts:

Gas Laws

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

Stoichiometry

Mole ratio
Dimensional Analysis

Explanation:

Step 1: Define

Identify.

0.500 mole Xe (g)

Step 2: Convert

[DA] Set up: $\displaystyle 0.500 \ \text{mole Xe} \bigg( \frac{22.4 \ \text{L Xe}}{1 \ \text{mole Xe}} \bigg)$
[DA] Evaluate: $\displaystyle 0.500 \ \text{mole Xe} \bigg( \frac{22.4 \ \text{L Xe}}{1 \ \text{mole Xe}} \bigg) = 11.2 \ \text{L Xe}$

Topic: AP Chemistry

Unit: Stoichiometry

3 0

2 years ago

What is the volume of 1.4 mol of nitrogen gas at STP?

zaharov [31]

Answer:

31.36 Liters

Explanation:

1 mole is equal to 22.4 liters at STP so you can use the equation

1.4 moles * 22.4 liters

to find the volume.

6 0

3 years ago

This step gives an investigation a specific direction or focus A.observation

frozen [14]

The correct answer is c hypothesis

5 0

3 years ago

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Which element(s) are not balanced in this equation ?

Alekssandra [29.7K]

Only the Fe is unbalanced.
:)

3 0

3 years ago

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