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3 years ago

PLEASE HELP ME WITH THIS I ONLY HAVE 8 MINUTES I will give you extra points . THANK YOUU

Chemistry

1 answer:

iogann1982 [59]3 years ago

3 0

Fossils formed when dinosaurs died

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Question 14 of 25

Allisa [31]

Answer:

it can be recycled over and over again

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3 years ago

What unit of time is based on the revolution of Earth around the sun?

aev [14]

Answer:

Hello There!!

Explanation:

The answer is B.Year

It takes 365 days for the earth to orbit the sun. 365 days is 1 year.

hope this helps,have a great day!!

~Pinky~

4 0

3 years ago

Read 2 more answers

A beaker of water has a volume of 125mL and a density of 1.0g/mL. Calculate the mass of the water.

Oksanka [162]

Answer: 125 grams

Explanation: (125mL)*(1.0g/mL) = 125g

4 0

3 years ago

Metallic pan is provided with a wooden plastic handle give reason

AlladinOne [14]

The metallic pan iis most likely going to be used on a stove.

The stove is heating something, and the conductive metallic pan will, well, conduct that heat throughout the entire body of the pan. Doing this will spread the heat to the handle, burning your hands.

Both wood and plastic are insulators, and they do not conduct heat or electricity. They will insulate your hands and protect them from the heat.

5 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