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3 years ago

Homogenous vs heterogenous

1 answer:

7 0

well yah .... homogeneous mixture has the same uniform appearance and composition throughout. Many homogeneous mixtures are commonly referred to as solutions.

while on the other hand ...A heterogeneous mixture consists of visibly different substances or phases. The three phases or states of matter are gas, liquid, and solid.

there are many differences between these two .... but fr a basic info .... i guess what i said would help .....

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What is the molarity of a 5.0 L solution that contains 0.5 moles of KNO3

pashok25 [27]

Answer:

Molarity of a 5.0 L solution that contains 0.5 moles of KNO3 is 0.1 M

Explanation:

Molarity : It is used to express the concentration of the solution and defined as total moles of solute present in one liter of solution .

$Molarity =\frac{moles\ of\ solute}{volume\ of\ solution(L)}$

Moles of KNO3 = 0.5 (given)

Volume of solution = 5.0 L

Substitute the value in given formula ,

$Molarity =\frac{0.5\ moles }{5.0\ L}$

on calculation,

Molarity = 0.1 mol/L

Molarity = 0.1 M

(M = mol/L)

8 0

3 years ago

Pharmacists sometimes measure medicines in the unit of "grains," where 1 gr = 65 mg. The label on a bottle of aspirin reads "Asp

viva [34]

Answer:

325mg of Aspririn

Explanation:

First you should note the information that the problem gives you:

- The bottle of Aspirin has 5gr (grains)

- 1gr(grain) = 65mg (miligrams)

Also, the problem is asking about how many aspirin are in 5 gr (grains), so you should use a conversion factor, as follows:

-First you should put the quantity you need to convert:

$5grAspirin$

-Then you write the denominator of the conversion factor that must have the same units that you want to convert, in this case gr:

$5grAspirin*\frac{}{1grAspirin}$

-Then you write the numerator with the units that you want to obtain and the numerical equivalence between the units, in this case:

$5grAspirin*\frac{65mgAspririn}{1grAspirin}$

-Finally you multiply numerators and divide by denominators:

$5grAspirin*\frac{65mgAspririn}{1grAspirin}=325mgAspririn$

8 0

3 years ago

Debbie was doing a science lab, and she was instructed to decide whether a piece of plastic would float or sink without actually

Mandarinka [93]

Find the density of the plastic. if the density is less than that of water, it's going to float. If it's more than the density of water, then it's going to sink.

8 0

3 years ago

Read 2 more answers

Which of the following statements is true?

eduard

Answer:

Lines of latitude are used to divide Earth into 24 time zones

Explanation:

5 0

3 years ago

Will mark brilliant pls help question is above

Degger [83]

Answer:

a.) The garden plants provide energy to all the other organisms. While not every organism consumes garden plants directly, every organism's food lineage can be traced to garden plants. For instance, while ground beetles do not directly consume garden plants, they do eat snails, and snails eat garden plants.

b.) The slug population might increase is the aphid population decreased because there would be less competition for food resources. Both populations consume garden plants, and there is only a finite number of garden plants. Therefore, there is a limit that each population can consume. If there were less aphids eating the garden plants, there would be more left for the slugs. Less starving slugs would lead to greater reproduction and thus a higher slug population.

4 0

1 year ago