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meriva
2 years ago
11

What is the molarity of a solution with 55 grams of CaCL2 dissolved in. 78 L of water?

Chemistry
1 answer:
Likurg_2 [28]2 years ago
5 0

Answer:

A is the correct ans

Explanation:

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N2 +3h2 2nh3 how many moles of hydrogen are needed to completely react with two moles of nitrogen?
Svetradugi [14.3K]
The ratio of N₂ to hydrogen is 1:3
so if N₂ is 2 then hydrogen will be six
2:6.
6 moles
8 0
3 years ago
2. What type of element is most abundant: metals, nonmetals, or metalloids
Sedbober [7]
Nonmetals is most likely the answer 
4 0
3 years ago
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If a doughnut contains 1.8 moles of sugar (C6H12O6), how many sugar molecules are in a box of one dozen doughnuts?
barxatty [35]

Answer:

130.1 x 10²³ molecules of sugar  

Explanation:

One dozen = 12 donuts

1 doughnut = 1.8 moles of sugar

12 doughnut = (1.8 x 12) moles of sugar = 21.6 moles of sugar

1 mole of any substance contains Avogadro’s number (6.023 x 10²³) of molecules.

1 mole of sugar = 6.023 x 10²³ molecules of sugar

21.6 moles of sugar = (6.023 x 10²³ x 21.6) molecules of sugar  

                                 = 130.1 x 10²³ molecules of sugar  

5 0
3 years ago
How does the vegetation surface type affect the amount of runoff
maxonik [38]

Answer:

<em>The type of vegetation a surface does affect the </em><em>water coming from above to sink in or runoff. </em>

Explanation:

This is how the vegetation affects the runoff:-

The leaves and stems present in the vegetation do not let the water fall directly on the soil and makes the process rather slow which makes the water to get to the ground slowly and sink in properly inside the soil rather than running off.

If the vegetation present is dense with  there was being hairy then also the water would not run out and will get absorbed by the roots letting the soil intact

5 0
3 years ago
What is the speed of a cheetah that runs 30 miles in 0.5 hours?<br> a
REY [17]

Answer:

60 mph (miles per hour)

Explanation:

0.5 hours is 1/2 of an hour, so to get the number of miles for a whole hour you multiply the miles ran by 2.

30 times 2 is 60.

6 0
3 years ago
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