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expeople1 [14]
2 years ago
14

Match the element with number of valence electrons

Chemistry
1 answer:
Alla [95]2 years ago
6 0

Answer:

Oxygen-O = 6

Carbon C = 4

Gallium G = 3

Astatine A = 7

Arsenic As = 5

Potassium K = 1

Hydrogen H = 1

Helium H = 2

Explanation:

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How many calcium atoms in Ca(ClO3)2?
Serjik [45]

Answer:

1

Explanation:

There is only one calcium atom because the subscript 3 applies only to the oxygen. Outside of the parentheses, the subscript 2 only applies to the chlorate ion. Therefore, there is only one calcium atom because there are no coefficients and subscripts. (Also drawing it out will help)

8 0
3 years ago
Have you ever tried to mix sugar with a cold drink like tea or lemonade? What happened? Explain why.
Vinvika [58]

Answer:

yes

Explanation:

it wont dissolve because when water is cold its molecules dont separate

5 0
3 years ago
Calculate the standard free energy for the following reaction at 25°C.
sladkih [1.3K]
I dont think with this much amount of information we can solve this...unless its an reversible reaction in that case free energy =0
3 0
3 years ago
Observe the samples of quartz and garnet shown here. How do the minerals differ from one another? How are they alike?
Viefleur [7K]

Answer:

Garnet is a hard transparent mineral that is often used as gemstones and abrasives and quartz is the most abundant mineral on the earth's surface. They are both minerals that come out of the earth and that's about the most they have in common.

Explanation:

I got this answer correct.

6 0
2 years ago
calculate the density of a rectangular solid, which has a mass of 25.71g. It is 2.30cm long, 4.01cm wide, and 1.82cm high
LUCKY_DIMON [66]
Volume of a rectangular block= 2.30x4.01x1.82=16.78cm3
Mass of the rectangular block= 25.71 g 
Density of the block will be = 25.71/16.78=1.53 g/cm3
So the 
ANSWER IS 1.53 g/cm3 density
5 0
3 years ago
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