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hjlf
3 years ago
15

Hello, I hope y'all help me answer this science question, I will mark brainlist to whoever answers it right

Chemistry
1 answer:
vichka [17]3 years ago
4 0

Answer:

1. Hot air is less dense then cold air therefore it is lighter the cold air. Because the hot air is less dense it helps lift the balloon up and because cold air is more dense it is heavier and helps the balloon slowly drop the balloon.

To be honest I don't know what 2 is but hope this helps some!

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Cumulus, stratus, and cirrus, there's many more but these are the main ones ^^
5 0
4 years ago
Read 2 more answers
Rasheed calculates that his chemical reaction should produce 4 moles of product, but when he does the experiment, he gets only 3
Brut [27]

Answer:

The answer to your question is 75%

Explanation:

Data

Theoretical production = 4 moles

Experimental production = 3 moles

Percent yield = ?

Formula

Percent yield = \frac{Experimental production}{Theoretical production} x 100

Substitution

Percent yield = \frac{3}{4} x 100

Result

Percent yield = 75 %

8 0
4 years ago
The following is an example of what type of chemical reaction?
Svetlanka [38]
This is a D. combustion reaction

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4 0
4 years ago
How many moles of sulfur<br> dioxide are in 2.26 x 10^33 sulfur dioxide molecules?
LUCKY_DIMON [66]

Answer:

moles = no. of molecules / Avogadro's number

         = 2.26 x 10^33 / 6.022 x 10^23

         = 3752906011

Round to significant figures which is 3 = 3.75 x 10^9 mol

Explanation: The formula for finding how many moles of a substance when given the amount of molecules is: moles = number of molecules / Avogadro's number

6 0
3 years ago
Why would a plant use the energy and resources to grow a fruit?
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Answer:

because a fruit holds the seeds it needs to reproduce and continue living.

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