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jeyben [28]
3 years ago
10

Which of the following statements is true? Oceanic crust is thicker than continental crust. Both oceanic and continental crust i

s made of granite. According to continental drift, the continents were once connected. The crust is thickest layer of the Earth.
Chemistry
1 answer:
zhuklara [117]3 years ago
3 0
The crust is the thickest layer of the Earth.

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Two atoms of calcium and one molecule of oxygen gas react and yield two molecules of calcium oxide.
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3 0
3 years ago
A compound is found to have an empirical formula of CH2O. If its molecular mass is 60.0 g/mol, what is its molecular formula?
denpristay [2]
The empirical formula CH₂O has a mass [(12 × 1) + (1 × 2) + (16 × 1)] = 30 g/mol

If the empirical formula is 30 g/mol,
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8 0
3 years ago
What is the pH of a solution of 0.800 M KH2PO4, potassium dihydrogen phosphate?
Nookie1986 [14]
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H₂PO₄⁻ + H₂O ↔ H₃PO₄ + OH⁻
Let x amount of H₂PO₄⁻ has reacted with water then,
Kb₁ = [H₃PO₄][OH⁻] / [H₂PO₄⁻]
[H₂PO₄⁻] = 0.8-x M
Kb₁ = x² / (0.8 - x)
Given Ka₁ = 7.5 x 10⁻³
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x = [OH⁻] = 1.03 x 10⁻⁶ M
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3 0
3 years ago
If a liquid sample of naphthalene is heated and remains at 218 degrees c until it is completely vaporized, you know that 218 deg
Alexxandr [17]
<span>The correct answer is b. Boiling point, why? because the liquid sample of napthalene is heated and remained at the temperature of 218 degrees celsius, the outcome was that the napthalene was completely vaporized, therefore we are given the scenario that at the temperature of 218 degrees celsius is considered to be the boiling pont of napthalene.</span>
5 0
3 years ago
Read 2 more answers
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