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3 years ago

What can u add into a powdered drink to make it drinkable?

Chemistry

1 answer:

devlian [24]3 years ago

5 0

Answer:

water i think

Explanation:

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Why does the atmosphere have holes in it? A. Pollution B. Fuel from Cars/Machines

a_sh-v [17]

Answer:

the answer is d .

Explanation:

all of these have pollutants and chemicals in them , damaging the ozone with carbon dioxide .

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3 years ago

Which subatomic particle is involved in chemical bonding and is responsible for an element's reactivity?

Murrr4er [49]

There are three different subatomic particles present in the atoms of each element: neutron, proton and electron. It is the electrons, and more specifically the valence electrons, that determine the reactivity of an element.

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3 years ago

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What compound are formed with lithium and selenium?

love history [14]

Answer:

Lithium selenide Lithium selenide (Li2Se) 12136-60-6 Dilithium selenide lithium selenidolithium

Molecular Weight 92.9 g/mol

Dates Modify 2020-11-15 Create 2005-08-08

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3 years ago

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Determine the molality of a solution of methanol dissolved in ethanol for which the mole fraction of methanol is 0.135. Give you

Alja [10]

Answer: The molality of the solution is 0.11 m

Explanation:

We are given:

Mole fraction of methanol = 0.135

This means that 0.135 moles of methanol is present in 1 mole of a solution

Moles of ethanol = 1 - 0.135 = 0.865 moles

To calculate the mass for given number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Moles of ethanol = 0.865 moles

Molar mass of ethanol = 46 g/mol

$0.865mol=\frac{\text{Mass of ethanol}}{46g/mol}\\\\\text{Mass of ethanol}=(0.865mol\times 46g/mol}=39.79g$

To calculate the molality of solution, we use the equation:

$Molality=\frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ (in grams)}}$

Where,

$m_{solute}$ = Given mass of solute (methanol) = 0.135 g

$M_{solute}$ = Molar mass of solute (methanol) = 32 g/mol

$W_{solvent}$ = Mass of solvent (ethanol) = 39.79 g

Putting values in above equation, we get:

$\text{Molality of methanol}=\frac{0.135\times 1000}{32\times 39.79}\\\\\text{Molality of methanol}=0.106m\approx 0.11m$

Hence, the molality of the solution is 0.11 m

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3 years ago

Name the type of chemical bonding in potassium bromide

Rzqust [24]

The bond between Potassium and Bromide is considered iconic, Because of how they lose electrons and become ions when they bond together.

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3 years ago