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Mariana [72]
3 years ago
7

The electron configuration of an element is 1s2 2s2 2p1. How many valance electrons does the element have. 1,2,3 or 4

Chemistry
2 answers:
kotykmax [81]3 years ago
5 0

Answer:

3

Explanation:

dlinn [17]3 years ago
4 0

Answer:

3

Explanation:

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When light waves pass through solids, the speed of the wave ___________.
bearhunter [10]

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i think that the answer is that it would decrease

Explanation:

hope this helps

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2 years ago
Which statement correctly describes the relationship between reactant and yield? The actual yield is calculated from the amount
melamori03 [73]
The statement which correctly describe the relationship between the reactants and the yield is this: 'the theoretical yield is calculated from the amount of the limiting reactants present'. The theoretical yields is the ideal maximum amount of a product that can be produced during a chemical reaction while the limiting reactant is the reactant that determines the maximum amount of product that can be formed.
8 0
3 years ago
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This gas law works only if temperature is recorded in ———— units
Vsevolod [243]

Answer:

Kelvin

Explanation:

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  • Gas laws includes, Boyle's law, Charles law, grahams law and pressure law among others.
  • Temperature is one of the quantity of gases explained by gas laws. For gas laws to work, temperature should always be in Kelvin. Therefore, when given temperature in degrees, it is converted to Kelvin by adding 273, that is °C + 273 = K.
8 0
2 years ago
What is the gram-formula mass of Ca3(PO4)2
Sindrei [870]
310.17 grams so there
4 0
3 years ago
If calcium chloride is dissolved in water, what can be said about the concentration of the calcium ion? a. It has the same conce
e-lub [12.9K]

Answer:

b. Its concentration is half that of the chloride ion

Explanation:

As the calcium chloride formula is CaCl2

CaCl2 <--> Ca + 2 Cl-

4 0
3 years ago
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