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rjkz [21]
3 years ago
10

Why do scientists look for patterns in the world?

Chemistry
1 answer:
PSYCHO15rus [73]3 years ago
6 0

Answer:

B. Patterns can help explain observations.

Explanation:

Hope this helps

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Use the chart to determine which type of bond is formed between potassium (K) and chlorine (Cl).
iris [78.8K]
Potassium and Chloride forms an ionic bond.
(K+) + (Cl-) = KCl

Potassium is under Group IA (Alkali Metal), wherein elements under this group can easily lose electrons.

Chlorine is under Group VII (Halogens), in which these elements can gain electrons easily.

The inner shell electrons on potassium will merge with the outer shell of electrons of chlorine to make potassium chloride.
6 0
3 years ago
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Solute: Will give brainliest
gtnhenbr [62]

Answer:

58.45 g of NaCI

Explanation:

hope this helps ya

have a great day

brainliest if its right?

4 0
3 years ago
4. Hot material in the Earth's mantle rises and cool material
bagirrra123 [75]

Answer:

Th answer is b. convection.

Explanation:

As the heat rises it cools down and it sinks and as the cold sinks it heats up so then it rises back up.

4 0
3 years ago
A chemical reaction requires 31.39 kJ. How many kilocalories does this correspond to?
Allushta [10]
<h3>Answer:</h3>

7.502 kilo calories

<h3>Explanation:</h3>

<u>We are given;</u>

  • Quantity of heat, Q as 31.39 kJ

We are required to convert it to kilo calories

First, we convert it to Joules

1 kJ = 1000 J

Therefore;

31.39 kJ will be equivalent to 31390 Joules

Second we convert Joules to calories using a suitable conversion factor

The suitable conversion factor is 4.184 J/Cal

Thus;

31390 Joules will be equivalent to;

= 31390 J ÷ 4.184 J/Cal

= 7502.39 Cal

Third, we convert calories to kilo calories

1 kCal = 1000 cal

Therefore;

7502. 39 Cal will be equivalent to;

= 7502.39 ÷ 1000

= 7.50239

=7.502 kilo calories

Hence, 31.39 kJ will correspond to 7.502 kilo calories

3 0
3 years ago
Why should the wearing of uniforms be discontinued in highscho​
Sav [38]
Because there is no need for them
6 0
2 years ago
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