3 years ago

Ocean tides on earth MOST influenced by gravity from the __

Chemistry

1 answer:

Ivahew [28]3 years ago

8 0

Answer:

moon

Explanation:

the moon's gravitational pull generates tidal force which affects earth's tides

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Which three elements are combined in magnesium carbonaye

meriva

Answer:

Magnesium, Carbon and Oxygen.

Explanation:

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3 years ago

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A compound contains 38.7% K, 13.9% N, and 47.4% O by mass. What is the empirical formula of the compound?

inysia [295]

K ---> 38.7 g / 39.1 g/mol = 0.99
N ---> 13.9 g / 14.0 g/mol = 0.99
O ---> 47.4 g / 16.0 g/mol = 2.96

Divide by smallest:

K ---> 0.99 / 0.99 = 1
N ---> 0.99 / 0.99 = 1
O ---> 2.96 / 0.99 = 3

KNO3

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4 years ago

Plants, plant life cycles, photosynthesis, plant parts, plant growth is what branch of science

WARRIOR [948]

The study of plants, plant life cycles, photosynthesis, plant parts, etc. is under botany (study of plants).

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3 years ago

Which state of matter has the highest density?

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There is no state that has the highest density. the state of matter is measured by temperature and pressure..

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4 years ago

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a sample of compound determined to contain 1.71 g C and 0.287 g H. The corresponding empirical formula is

fiasKO [112]

Answer: The empirical formula is $CH_2$ .

Explanation:

Mass of C = 1.71 g

Mass of H = 0.287 g

Step 1 : convert given masses into moles.

Moles of C = $\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{1.71g}{12g/mole}=0.142moles$

Moles of H = $\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{0.287g}{1g/mole}=0.287moles$

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C = $\frac{0.142}{0.142}=1$

For H = $\frac{0.287}{0.142}=2$

The ratio of C: H = 1: 2

Hence the empirical formula is $CH_2$ .

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3 years ago