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4 years ago

Is it true The rotation of the Earth causes night and day.

Chemistry

2 answers:

Maksim231197 [3]4 years ago

6 0

Answer:

This is true.

Explanation:

The sun is the star we orbit so in order for there to be night and day we would have to spin.

viktelen [127]4 years ago

3 0

Answer:

Yes it's True because it has to be true and it will be true. Sure

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Elements in the first column of the periodic table belong to the alkali family. Name the alkali metals.

Makovka662 [10]

Lithium, sodium, potassium, rubidium, cesium, and francium

6 0

3 years ago

the pressure of 1 mol of gas is decreased to 0.05 atm 273.k. what happens to the molar volume of the gas under these conditions?

svp [43]

The molar volume of the gas : V = 447.993 L

<h3>Further explanation</h3>

Given

n = 1 mol

P = 0.05 atm

T = 273 K

Required

The molar volume

Solution

Ideal gas law :

PV=nRT

V = nRT/P

Input the value :

V = 1 x 0.08205 x 273 / 0.05

V = 447.993 L

6 0

3 years ago

Whats does the elements Li (lithium),B (boron, and Ne neon) have in common?

nikdorinn [45]

They are in the same period (horizontal)

8 0

3 years ago

Consider the dissolution of MnS in water (Ksp = 3.0 × 10–14). MnS(s) + H2O(l) Mn2+(aq) + HS–(aq) + OH–(aq) How is the solubility

Mademuasel [1]

Answer:

The solubility of MnS will decrease on addition of KOH solution.

Explanation:

As per the equation given:

$MnS(s)+H_{2}O(l) -->Mn^{+2}(aq)+HS^{-}(aq)+OH^{-}(aq)$

On dissolution of MnS in water it gives a basic solution as it gives hydroxide ions.

Now when the we are adding aqueous KOH solution, it will dissociate as:

$KOH(aq)--->K^{+}(aq)+OH^{-}(aq)$

Thus it will further furnish more hydroxide ion,

This will increase the concentration of hydroxide ions (present of product side), the system will try to decrease its concentration by shifting towards reactant side.

Thus the solubility of MnS will decrease on addition of KOH solution.

7 0

3 years ago

ASAP for brainlist first correct question

Ghella [55]

The second law of thermodynamics states that in a reversible process, the entropy of the universe is constant, whereas in an irreversible process, such as the transfer of heat from a hot object to a cold object, the entropy of the universe increases

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3 years ago