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3 years ago

9

a scientist is mixing a chemical for a solution foe an experiment. The solution contains 5/8 ounce of water and 1/6 ounce of sal

ine. What is the unit rate of water to saline solution?

1 answer:

chubhunter [2.5K]3 years ago

6 0

One whole and two eigths

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What does it mean if a solution is a "weak acid "? Strong acid? Give logical ph values for each

galina1969 [7]

Answer:

A weak acid is an acid that partially dissociates into its ions in an aqueous solution or water. In contrast, a strong acid fully dissociates into its ions in water. At the same concentration, weak acids have a higher pH value than strong acids.

Explanation:

:)

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3 years ago

Who first established the heliocentric view

Alexus [3.1K]

This theory was created by Nicoulas Copernicus

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3 years ago

When dissolved in water, a neutral molecule of calcium chloride dissociates into three ions - one calcium ion and two chloride i

Mashcka [7]

Explanation:

Calcium chloride is an ionic compound as it is formed by transfer of an electron to each chlorine atom.

So, being an ionic compound calcium chloride is able to dissociate completely into water.

Hence, the dissociation reaction will be as follows.

$CaCl_{2}(s) \rightarrow Ca^{2+}(aq) + 2Cl^{-}(aq)$

Since, two electrons has been lost by single calcium atom. Therefore, calcium atom will have a charge of +2.

Thus, we can conclude that the charge on the calcium ion, in elementary units is +2.

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2 years ago

2 moles of substance A contains 12.04 × 1023 atoms.

professor190 [17]

Answer:

2 moles of Substance B

Explanation:

Because 1 mole of any substance contains 6.02× 10²³ particles either atoms, molecules, ions or even electron(Avogardo Constant)

Therefore 12.04 × 10²³/ 6.02× 10²³ = 2 mole of Substance B

7 0

2 years ago

Calculate the density mass= 54.2 volume= 78.1

Helen [10]

Answer:

0.693 (you can round it up if you want to)

Explanation:

Density= mass ÷ volume

54.2 ÷ 78.1 = 0.693

I hope this helped☺

6 0

2 years ago