CHEMISTRY MIDDLE SCHOOL

A topographic map would be most useful for which activity?A.
finding the average precipitation in your city

B.
determining the highest temperature in your state

C.
finding a source of copper or iron in your state

D.
finding the lowest point in your city

Plz help me

Answers

Answer 1

Answer:

the answer is D. because a topographic map measures the lowest and highest points in a certain place

Hope this helps

Answer 2

Answer: D.
finding the lowest point in your city

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How does the temperature and pressure change inside the earth, moving downward from the crust to the core?A. Both temperature and pressure decrease. B. Both temperature and pressure increase. C. Temperature increases, but pressure decreases. D. Temperature decreases, but pressure increases.
An engineer decides to develop technology that will help decrease soundpollution due to highway traffic noise. What step of the engineering processes did she just undertake?A. Make a planB. Know the background.C. Identify a need.D. Test and evaluate.
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Which gas is not known as green house gas

An atom has 8 electrons and a mass of 17. What would the correct symbol be?A. 17gF
B. 90
C. 25,61
D. 17,0

Answers

I believe the answer is A.

Define and explain bond energy.

Answers

Bond Energy - measure of the amount of energy needed to break apart one molecule of covalently bonded gases.

bond energy is known as the amount of energy needed to break a molecule into its atoms. .

What happens to metal railroad tracks during the heat of a summer day?

Answers

They expand and that is why there are small gaps

The rails expand during the heat of a summer day

How many grams of magnesium contain 4.80 x 10^25 atoms of magnesium

Answers

Answer:

mass Mg = 1.937 Kg

Explanation:

from periodic table for Mg:

⇒ molecular mass Mg = 24.305 g/mol

∴ mol ≡ 6.022 E23 atoms

⇒ mol Mg = (4.80 E25 atoms)×(mol/6.022 E23 atoms)

⇒ mol Mg = 79.708 mol

⇒ mass Mg = (79.708 mol)×(24.305 g/mol)

⇒ mass Mg = 1937.3 g

⇒ mass Mg = 1.937 Kg

Are these radiation, conduction, or convection?1) In a swimming pool, the water near the surface is slightly warmer. The warm water rises because of _________.

2) The metal skewer gets so hot that you drop your marshmallows in the campfire because of ___________.

3) You lay on that same rock at night so that you can keep warm by _________.

4) The cause of whether systems on Earth is __________.

5) You are in the top bunk of a bunk bed and you want to turn the air conditioner on while your friend on the bottom bunk is fine is caused by __________.

PLEASE HELP I NEED THIS TONIGHT!!!

Answers

Hey! 1) Convection [Warm water is less dense, so it rises.] 2) Conduction [The metal skewer is heated by the fire, and it is directly touching your hand. The metal skewer transfers heat to your hand through conduction.] 3) Conduction [The rock is directly touching you, so it transfers heat to you through conduction.] 4) Convection [Convection causes weather systems because hot air sinks and cold air sinks] 5) Convection [The hot air rises because it is less dense while the cold air sinks because it is denser.] ~Hope this helped~

What are some behavioral adaptations for a porcupines?