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iogann1982 [59]
3 years ago
8

A solution contains 225 g of glucose, c6h12o6, dissolved in enough water to make 0.825 l of solution. what is the molarity of th

e solution?
Chemistry
1 answer:
Art [367]3 years ago
4 0
Molar mass glucose : <span>180.1559 g/mol
</span>
number of moles:

n  = mass solute / molar mass

n = 225 / <span>180.1559 </span>

n = 1.248 moles

therefore:

Molarity  = moles solute / volume 

Molarity =  1.248 / 0.825 => 1.513 M
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If mass =180kg and volume =90m3, what is the density
DaniilM [7]
To find the density you must divide the mass by the density.
180kg ÷ 90m³ = 2kg/m<span>³
The density is </span>2kg/m³
4 0
3 years ago
A sample of seawater consists of water, sodium ions, chloride ions, and several other dissolved salts. These ions and salts are
stellarik [79]

Answer:

Mixture, homogeneous mixture, solution

Explanation:

A mixture is defined as a substance which is made by physical combination of two or more substance.

As in sea water, more than two substance are present, therefore is considered as mixture.

A mixture is considered as homogeneous mixture, if it has same proportion of components through out the mixture. In sea water proportions of all the components are same, therefore, its is also a homogeneous mixture.

In solution, solute is dissolved in a solvent and the concentration of the solute is same through out the solution.. In sea water, sodium ions, chloride ions, and several other salts are dissolved in water. Therefore, water is considered as solvents and components present are considered as solute.

so, sea water can also considered as solution.

Among the given options, 1, 3 and 4 are correct

So, sea water is considered as mixture, homogeneous mixture and solution.

6 0
2 years ago
Gold is a natural resource, because it occurs naturally in the environment and humans use it. Gold cannot be made from other sub
Viktor [21]

Answer:

Answer below:

Explanation:

A nonrenewable resource

5 0
2 years ago
Read 2 more answers
Let this be an easy 5 points for your brainly account all is ask for in return is a "thank you"
Svet_ta [14]

Answer:

The number of neutrons present in one atom of isotope of Silicon of mass 28 amu is<u> 14 neutrons</u>

Explanation:

Symbol of Si isotope

_{14}^{28}\textrm{Si}

<u>Number of Neutron = Mass number - Atomic Number</u>

Mass number = Total number of protons and neutrons present in the nucleus of the atom.For Si = 28 amu

Atomic Number = Total number of Protons present in the nucleus.

Si = 14

Number of neutron = 24 - 14

                                = 14

4 0
3 years ago
The nucleus of the atom is held together by the attraction of the positively charged protons and the negatively charged electron
7nadin3 [17]
False.........................
8 0
2 years ago
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