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ollegr [7]
3 years ago
5

Which is an example of a solution? A.tea B.salad dressing C.salad D.milk

Chemistry
2 answers:
MatroZZZ [7]3 years ago
6 0
The correct answer is A.Tea
podryga [215]3 years ago
4 0
A since it has 2 or more things mixed with it.....
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HURRY WHICH ONE IS IT??
aliya0001 [1]

Answer:

Protons are positive, electrons are negative, neutrons have to charge. Most of an Atoms mass comes from its protons and neutrons

Explanation:

I took some notes in my notebook about Atoms.

8 0
2 years ago
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The volume of a sample of <img src="https://tex.z-dn.net/?f=P_b" id="TexFormula1" title="P_b" alt="P_b" align="absmiddle" class=
murzikaleks [220]

Answer : The mass of sample is, 267.5 grams.

Explanation :

Density : It is defined as the mass of a substance contained per unit volume.

Formula used :

Density=\frac{Mass}{Volume}

Given:

Volume of Pb = 23.57cm^3

Density of Pb = 11.35g/cm^3

Now put all the given values in the above formula, we get the mass of Pb.

11.35g/cm^3=\frac{Mass}{23.57cm^3}

Mass=267.5195g=267.5g

Therefore, the mass of sample is, 267.5 grams.

5 0
3 years ago
Solid lithium (Li) reacts with water to produce hydrogen gas (H) and a solution of lithium
netineya [11]

Answer:

Li(s) + H20(l) --> LiOH(aq) + H(g)

Explanation:

it is already balanced

6 0
2 years ago
How many moles are in 39.5 grams of Lithium?
Blizzard [7]

Answer:

185.05 g.

Explanation

Firstly, It is considered as a stichiometry problem.

From the balanced equation: 2LiCl → 2Li + Cl₂

It is clear that the stichiometry shows that 2.0 moles of LiCl is decomposed to give 2.0 moles of Li metal and 1.0 moles of Cl₂, which means that the molar ratio of LiCl : Li is (1.0 : 1.0) ratio.

We must convert the grams of Li metal (30.3 g) to moles (n = mass/atomic mass), atomic mass of Li = 6.941 g/mole.

n = (30.3 g) / (6.941 g/mole) = 4.365 moles.

Now, we can get the number of moles of LiCl that is needed to produce 4.365 moles of Li metal.

Using cross multiplication:

2.0 moles of LiCl → 2.0 moles of Li, from the stichiometry of the balanced equation.

??? moles of LiCl → 4.365  moles of Li.

The number of moles of LiCl that will produce 4.365 moles of Li (30.3 g) is (2.0 x 4.365 / 2.0) = 4.365 moles.

Finally, we should convert the number of moles of LiCl into grams (n = mass/molar mass).

Molar mass of LiCl = 42.394 g/mole.

mass = n x molar mass = (4.365 x 42.394) = 185.05 g.

7 0
2 years ago
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Chlorophyll
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Chlorophyll helps the plant by absorbing light energy and turning it into sugars to help the plant grow (photosynthesis)

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