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Talja [164]
2 years ago
15

An atom has two valence electrons, but four shells. This element is a member of which group or family?

Chemistry
1 answer:
Vesna [10]2 years ago
8 0
The correct answer is C: the alkaline earth metals!
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The process that provides the sun with its energy
SashulF [63]

Answer:

Nuclear fusion

Explanation:

5 0
3 years ago
Which statements below are an appropriate hypothesis in response to this question? Check all that apply. If a substance changes
Nostrana [21]

Answer:

If a substance undergoes a physical change, then it will retain most of its original properties because no new substance is formed.

If a substance undergoes a chemical change, then it will not retain its original properties because a new substance is formed.

Explanation:

So in shorter words its options 2 and 3

6 0
3 years ago
Read 2 more answers
How many moles of H2 and N2 can be formed by the decomposition of 0.145 mol of ammonia, NH3 ?​
zepelin [54]

Answer:

Explanation:

The moles of H2 and N2 are as follows respectively, 0.3915mol of H2 and 0.1305 mol of N2.

5 0
2 years ago
Does someone know the combustion in a jacket potato???
Leya [2.2K]

Answer:

Some varieties of potato, such as Russet and King Edward, are more suitable for baking than others, owing to their size and consistency. Despite the popular misconception that potatoes are fattening, baked potatoes can be part of a healthy diet.[2]

7 0
3 years ago
A mover packs books, CDs, and DVDs into a moving box. If the box contains 6.5 kg of books, 1.5 kg of CDs, and 2.0 kg of DVDs, wh
mariarad [96]
Given: 
<span>M1 = 6.5 kg of books
</span><span>M2 = 1.5 kg of CDs
</span><span>M3 = 2.0 kg of DVDs

Required: percent by mass of each object

Solution:
First, we calculate the total mass.

M = 6.5 kg + 1.5 kg + 2.0 kg =  10 kg

Percent by mass is calculated by getting the ration of the mass of an object and the total mass multiplied by 100 to get the percent.

%M1 = 6.5 / 10 x 100 = 65%
%M2 = 1.5/10 x 100 = 15%
%M3 = 2.0/10 x 100 = 20%</span>
4 0
3 years ago
Read 2 more answers
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