All categories

3 years ago

Which is a heterogeneous mixture?

Chemistry

1 answer:

AURORKA [14]3 years ago

6 0

Wouldn't it be C since heterogeneous mixture means you are able to separate the composition. <span />

You might be interested in

Which element has the larger Zell

Eddi Din [679]

Answer:

Explanation:

because of potassium and lithium belongs to

alkali metals

6 0

3 years ago

Which one of the following statements is correct.

k0ka [10]

B. electrons have a negative electrical charge

7 0

3 years ago

Read 2 more answers

A chemistry student needs 10.0g of ethanolamine for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the

iogann1982 [59]

Answer: The volume of ethanolamine the student should pour out is $9.80cm^3$

Explanation:

To calculate the volume of ethanolamine we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$

Density of ethanolamine = $1.02g/cm^3$

Mass of ethanolamine = 10.0 g

Volume of ethanolamine = ?

Putting values in above equation, we get:

$1.02g/cm^3=\frac{10.0g}{\text{Volume of ethanolamine}}\\\\{\text{Volume of ethanolamine}=\frac{10.0g}{1.02g/cm^3}=9.80cm^3$

Thus the volume of ethanolamine the student should pour out is $9.80cm^3$

4 0

4 years ago

A mixture of MgBr2 and inert material is analyzed to determine the Mg content. First the mixture is dissolved in water. Then all

Mumz [18]

Answer:

9.24% the percent of Mg in the mixture.

Explanation:

Mass of silver bromide = 1.1739 g

Moles of silver bromide = $\frac{1.1739 g}{188 g/mol}=0.006244 mol$

1 mole of AgBr has 1 mole of bromine atom.Then 0.006244 moles AgBr has 0.006244 mole bromine atom.

Moles of bromine atoms = 0.006244 moles

Magnesium bromide has 2 moles of bromine atom.Then 0.006244 moles of bromine atoms will be in :

$\frac{0.006244 mol}{2}=0.003122 mol$

Magnesium bromide has 1 mole magnesium atom, then 0.003122 moles of magnesium bromide will have :

$1\times 0.003122 mol=0.003122 mol$ magnesium atom

Mass of 0.003122 moles of magnesium :

0.003122 mol × 24 g/mol = 0.07493 g

Mass of the sample = 0.8107 g

Percentage of magnesium in the sample ;

$=\frac{0.07493 g}{0.8107 g}\times 100=9.24\%$

9.24% the percent of Mg in the mixture.

8 0

3 years ago

A nurse practitioner prepares an injection of promethazine, an antihistamine used to treat allergic rhinitis. If the stock bottl

eimsori [14]

For this problem, let's use the approach of dimensional analysis. This technique is done by cancelling out like units that appear both on the numerator and the denominator side. As a result, this technique will let you know that your final answer conforms to what parameter is asked. In this case, the final answer should be in mL. The solution is as follows:

14.5 mg * 1 mL/25 mg = 0.58 mL

7 0

3 years ago

Read 2 more answers