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3 years ago

The Moon’s appearance changes during its around Earth. These changes are called ____________.

Chemistry

1 answer:

Daniel [21]3 years ago

4 0

Answer:

The Moon’s appearance changes during its orbit around Earth. These changes are called phases.

Explanation:

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Let us write the appropriate equilibria and associate the correction <img src="https://tex.z-dn.net/?f=K_b" id="TexFormula1" tit

rosijanka [135]

Explanation:

The relation between $K_a\&K_b$ is given by :

$K_w=K_a\times K_b$

Where :

$K_w=1\times 10^{-14}$ = Ionic prodcut of water

The value of the first ionization constant of sodium sulfite = $K_{a1}=1.4\times 10^{-2}$

The value of $K_{b1}$ :

$1\times 10^{-14}=1.4\times 10^{-2}\times K_{b1}$

$K_{b1}=\frac{1\times 10^{-14}}{1.4\times 10^{-2}}=7.1\times 10^{-13}$

The value of the second ionization constant of sodium sulfite = $K_{a2}=6.3\times 10^{-8}$

The value of $K_{b2}$ :

$1\times 10^{-14}=6.3\times 10^{-8}\times K_{b1}$

$K_{b1}=\frac{1\times 10^{-14}}{6.3\times 10^{-8}}=1.6\times 10^{-7}$

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3 years ago

You've made the hypothesis that the less rainfall a cactus plant gets, the taller it will grow, since cactuses like dry conditio

Leviafan [203]

A. the height of the cactus plants

Explanation:

The dependent variable in this experiment designed to test this hypothesis is the height of the cactus plants.

In a hypothesis statement, we can always deduce the dependent and independent variables.

Independent variables do not rely on other variables. They are usually the cause of the phenomenon observed in an experiment. In this experiment, it is the rainfall on the cactus plant.
Dependent variable is that variable that relies on the independent variable. It is usually the effect of changes in independent variable.
The height of the cactus plant depends on the amount of rainfall in an area.

learn more:

Controlled experiment brainly.com/question/1621519

#learnwithBrainly

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3 years ago

Whitch is a type of mining where steam beds are minded

Varvara68 [4.7K]

Answer: placer mining

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3 years ago

1. How many atoms are there in 1.7 mol Ca?

ella [17]

answer: 3g. 17kg+3 ÷ 0.25

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3 years ago

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1. How many molecules are in 643.21 grams of

Veronika [31]

Answer: Calculate the molar mass of Mg3(PO4)2 in grams per mole or search for a chemical formula or substance.

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3 years ago

The Moon’s appearance changes during its ________ around Earth. These changes are called ____________________.

The Moon’s appearance changes during its around Earth. These changes are called ____________.