2 years ago

Number 4 Please Help!!!!

Chemistry

1 answer:

Dominik [7]2 years ago

5 0

Answer: c i think

Explanation:

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Put the elements in order from lowest (1) to highest (6) electronegativity.

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Choose the ingredients needed for nuclear fusion. Check all that apply. energy helium gas high temperatures hydrogen gas low pre

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2 years ago

How many milliliters of a 1.5 m h2so4 are needed to neutralize 35ml sample of a 1.5 m solution?

DochEvi [55]

Answer:

1) 17.5 mL

Explanation:

Hello,

In this case, the reaction between sulfuric acid and potassium hydroxide is:

$H_2SO_4+2KOH\rightarrow K_2SO_4+2H_2O$

In such a way, we notice a 1:2 molar ratio between the acid and the base, therefore, at the equivalence point we have:

$2*n_{acid}=n_{base}$

And in terms of concentrations and volumes:

$2*M_{acid}V_{acid}=M_{base}V_{base}$

Thus, we solve for the volume of acid:

$V_{acid}=\frac{M_{base}V_{base}}{2*M_{acid}} =\frac{35mL*1.5M}{2*1.5M} \\\\V_{acid}=17.5mL$

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2 years ago

How many moles in 250g of CBr 4

EleoNora [17]

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fzdfxbgfdgbfbfggf

Explanation: fregrgsrg5

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2 years ago

How many total atoms are in 3Na2SO4?

tigry1 [53]

Answer:

A. 21

Explanation:

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