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IrinaK [193]
3 years ago
7

The density of a substance with a mass of 40.0g and a volume of 10ml is?

Chemistry
1 answer:
marusya05 [52]3 years ago
3 0

In this experiment you will determine the density of an unknown liquid. You will measure the mass of a known volume delivered from a pipet and use the expression:

<span><span><span>M
V</span></span><span>D=</span><span /></span>

where D = density, M = mass and V = volume to calculate the density of the unknown liquid.

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If a sample has a mass of 245.8 grams and takes up 94ml of space, what is the density of the sample?
allochka39001 [22]

To find the density of any sample, you need to know the Mass (grams), and its Volume (measured in mL or cm³). Divide the mass by the volume in order to get a sample's Density.

 

Density (P)= Mass(m)/Volume(V)

P=m/V

P=245.8grams/94ml

<span>P=2.65grams per ml </span>

7 0
3 years ago
What is the name of the ionic compound rbcl?
Kamila [148]
<span>Rubidium Chloride is the answer i believe </span><span /><span>
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3 0
3 years ago
A buffer is a solution that is a mixture of either a weak acid and its conjugate base or a weak base and its conjugate acid. Whe
babymother [125]

Answer:

b. The weak base of an alkaline buffer will accept hydrogen protons when a strong acid is added to the solution

d.The conjugate acid of an alkaline buffer will donate hydrogen protons when a strong base is added to the solution.

Explanation:

A buffer is a solution that resist pH change, it shows minimal change upon addition of small amount of strong acid or strong base. An alkaline buffer will have a  basic pH, above 7. It is made by mixing a weak base and its salt with a strong acid. An example of an alkaline buffer is carbonate-bicarbonate buffer that is prepared using varying amount of anhydrous sodium carbonate and volume of solution of sodium bicarbonate to get pH range between 9.2 to 10.7

Within the buffer,the salt is completely ionized while the weak base is partly ionized. on addition of acid, the released protons will be removed by the bicarbonate ion to form sodium carbonate; on addition of base, the hydroxide ion released by the base will be removed by the hydrogen ions to form water and the pH remains relatively the same

6 0
3 years ago
There are many different types of maps a map that shows the types of rocks or the age of rocks in an area is called a
sergeinik [125]
<span>The type of map that shows the type and age of rocks in an area is called a Geologic Map. A geologic map is a special-purpose map that represents the distribution of diverse types of rocks, as well as locations of different geologic structures such as faults and folds. This map is the main source of information for various aspects of land-use planning, especially in the placement of transportation systems and buildings. Although they are typically depicted as two-dimensional, they can also be illustrated in its third or fourth dimension depending on the type of information needed to be taken. </span>
8 0
3 years ago
Soda water is water that has bubbles of carbon dioxide in it,
Elan Coil [88]

Answer:

I think mixture

Explanation:

Mixture because it is a mixture of water and carbon

3 0
3 years ago
Read 2 more answers
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