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KonstantinChe [14]
3 years ago
9

How many nonmetals are there in the boron group?

Chemistry
1 answer:
OLga [1]3 years ago
5 0
The answer is going to be there isn't any nonmetals. hope that helped
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What are the units of k in the following rate law?Rate = k[X]s/MM/s1/s1/MsMs
amm1812

Answer:

Units of k = s^{-1}

Explanation:

According to the law of mass action, the rate of a reaction is determined as the product of the active concentration of the reactant each raised to their experimentally determined coefficients which are known as order.

So, given that:-

Rate = k [X]

Rate of the reaction is also, the change in the concentration per unit time. So, the units of rate of a reaction is :- M/s

Units of [X] = M

So,

k=\frac{Rate}{[X]}=\frac{M/s}{M}=s^{-1}

Units of k = s^{-1}

8 0
3 years ago
A student wanted to test how the mass of a paper airplane affected the distance it would fly. Paper clips were added before each
svetlana [45]

Answer:

The distance the plane flies.

Explanation:

This is the dependent (outcome) variable because it is changing depending on the number of paper clips that are added to the plane.

8 0
1 year ago
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If all the water in 430.0 mL of a 0.45 M NaCI solution evaporates what is the mass of NaCI will remain
skad [1K]

Answer:

11.31 g.

Explanation:

Molarity is defined as the no. of moles of a solute per 1.0 L of the solution.

M = (no. of moles of solute)/(V of the solution (L)).

<em>∴ M = (mass/molar mass)of NaCl/(V of the solution (L)).</em>

<em></em>

<em>∴ mass of NaCl remained after evaporation of water = (M)(V of the solution (L))(molar mass)</em> = (0.45 M)(0.43 L)(58.44 g/mol) = <em>11.31 g.</em>

6 0
3 years ago
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Which natural polymers are involved with making clothing?
fredd [130]

Answer:

A. wool, silkworm, cocoon, and cellulose

Explanation:

I hope this helped!

7 0
3 years ago
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What might happen to global atmospheric carbon levels if the polar ice caps were to melt?
kolbaska11 [484]
If the Arctic became completely ice-free and phytoplankton productivity levels were maintained, Arrigo and his colleagues calculated that the new carbon sink could in theory absorb an extra 160 million tonnes of carbon each year.
6 0
4 years ago
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