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Flauer [41]
3 years ago
12

Which of the following questions can be answered by science?

Chemistry
2 answers:
Irina18 [472]3 years ago
7 0

Answer:

A. What is the composition of air?, B. Should the driving age be reduced?, D.

Should students be allowed to bring toys to school? Answer: A,B,D.

Hunter-Best [27]3 years ago
6 0

Answer:

<h2><em><u>(</u></em><em><u>a</u></em><em><u>)</u></em><em><u>,</u></em><em><u> </u></em><em><u>(</u></em><em><u>b</u></em><em><u>)</u></em><em><u> </u></em><em><u>and</u></em><em><u> </u></em><em><u>(</u></em><em><u>c</u></em><em><u>)</u></em><em><u> </u></em><em><u>I</u></em><em><u> </u></em><em><u>guess</u></em></h2>
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Naoki's bicycle has a mass of 11 kg. If Naoki sits on her bicycle and starts pedaling with a force of 197.2 N, causing an accele
Cloud [144]

yes 89.75 sorry I'm not the best at math you should look on the internet

7 0
3 years ago
When Aluminum foil is added to a solution of Copper (II) chloride (blue color solution), the following reaction occurs.
zimovet [89]
I think is b................
7 0
2 years ago
If a gas furnace releases 420 kcal of heat energy, what is the energy in kilojoules? (1 cal = 4.184 J)
Igoryamba
Answer:
The furnace releases 1757280 J 

Explanation:
We will do the conversion on two steps:
1- convert the kcal to cal
2- convert the cal to J

Step 1: converting kcal to cal
1 kcal is equivalent to 1000 cal. Therefore:
420 kcal is equivalent to 420*1000 = 420000 cal

Step 2: converting cal to J
We are given that:
<span>1 cal = 4.184 J
</span>Therefore:
420000 cal is equivalent to 420000 * 4.184 = 1757280 J 

Hope this helps :)
8 0
3 years ago
Use your Cabbage pH Indicator Key to determine the pH of each. Enter the pH ranges into the data table.
notsponge [240]

Answer: pH :1-2 / acid

pH:7/neutral

pH:8-9/basic

Your welcome

4 0
3 years ago
Read 2 more answers
The PH of a solution of Hcl is 2.find out the amount of acid present in a litre of the solution ​
Scrat [10]

Answer:

The solution is 10^-2 or 0.01M in HCl.

Explanation:

meaning of pH is "power of hydrogen".

what is the molar concentration of a HCl solution with pH=2?

Let say pH=2

[H+]=10^-2M

HCL is a strong acid that dissociates completely:

[H+]=[HCL]

Therefore solution is 10^-2 or 0.01M in HCL.

5 0
3 years ago
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