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3 years ago

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Chemistry

1 answer:

Brilliant_brown [7]3 years ago

5 0

Answer: Its the 2nd one

Explanation: A straight horizontal line on a speed-time graph means that speed is constant. It is not changing over time. A straight line does not mean that the object is not moving! This graph shows increasing speed.

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The best lewis structure for sulfuric acid has zero formal charges, sulfur as the central atom, and no bonds between s and h. ho

Marianna [84]

If we are to draw the sulfuric acid structure based on Lewis it would look like:

O = S – O –H

So from this, we can see that there are 2 double bonds (O = S) and 4 single bonds (S – O and O – H).

Therefore the answer is:

4 single, 2 double

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3 years ago

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If you have 8.5 moles of water (H2O), how many grams of water do you have?

Flura [38]

Answer: i think it is 144.16

Explanation:

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Explain how liquid can enter the gas phase without reaching its boiling point

ioda

Evaporation is a phase transition from the liquid phase to the gas phase that occurs at temperatures below the boiling point at a given pressure.

hope this helps :)

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3 years ago

A phosphorus atom and a chlorine atom are likely to form a covalent bond because both elements:

Jobisdone [24]

A phosphorus atom and a chlorine atom are likely to form a covalent bond because both elements are nonmetals.

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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

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2 years ago