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Andrew [12]
3 years ago
15

Water has density of 1.0 g/L. What volume of water has mass 250 g?

Chemistry
1 answer:
schepotkina [342]3 years ago
4 0

Answer:

Examine the units: If the density is 1 g/mL, how many mL do you need to make 250 g?

X mL * 1 g/mL = 250 g

Solve for X

x mL = 250 g / 1 g/mL = 250 mL

<em>Hope</em><em> this</em><em> helps</em><em> </em><em>:</em><em>)</em>

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The burning of coal, a fossil fuel, produces water and carbon dioxide. How is this similar to cellular respiration?
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I think the answer is C but you might need a second opinion on this answer

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How many protons, and neutrons are in nuclide tin-115?
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__________ have an electric charge of -1.60 × 10-19 C (-e).
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Answer:

Electrons have an electric charge of -1.60 × 10-19 C

Explanation:

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2 years ago
A sample compound contains 5.723g Ag, 0.852g S and 1.695g O. Determine its empirical formula.
Lubov Fominskaja [6]

Answer:

Ag_2SO_4

Explanation:

Formula for the calculation of no. of Mol is as follows:

mol=\frac{mass\ (g)}{molecular\ mass}

Molecular mass of Ag = 107.87 g/mol

Amount of Ag = 5.723 g

mol\ of\ Ag=\frac{5.723\ g}{107.87\ g/mol} =0.05305\ mol

Molecular mass of S = 32 g/mol

Amount of S = 0.852 g

mol\ of\ S=\frac{0.852\ g}{32\ g/mol} =0.02657\ mol

Molecular mass of O = 16 g/mol

Amount of O = 1.695 g

mol\ of\ O=\frac{1.695\ g}{16\ g/mol} =0.10594\ mol

In order to get integer value, divide mol by smallest no.

Therefore, divide by 0.02657

Ag, \frac{0.05305}{0.02657} \approx 2

S, \frac{0.02657}{0.02657} \approx 1

O, \frac{0.10594}{0.02657} \approx 4

Therefore, empirical formula of the compound = Ag_2SO_4

7 0
4 years ago
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