All categories

3 years ago

A cork has a mass of 3 grams and a volume of 16 cms calculate the density

Chemistry

1 answer:

REY [17]3 years ago

6 0

hey mate here is ur answer

solution

mass{m}=3 gram

=3/1000

volume{v}=16cm

=16/100

density=m/v

=3/1000÷16/100

=3/160

=0.01875kg/m3

You might be interested in

How is sodium extracted from is ore?

Aloiza [94]

Answer:

Sodium is extracted from it's ore by electrolysis of fused sodium chloride.

Explanation:

he process is usually carried out ia a special electrochemical cell called the downs cell. While molten sodium metal is collected at the cathode and also sent to tanks for cooling and storage.

5 0

2 years ago

A radioactive nucleus emits a beta particle, then the parent and daughter nuclei are

Nana76 [90]

Answer:

isobars

Explanation:

How?

A radioactive nucleus emits beta particle(Like uranium,radium)
So the mass numbers are same for daughter nuclei .
They have different atomic numbes .

So they are isobars

3 0

2 years ago

Read 2 more answers

Given below is the balanced equation for the combustion of decane. 2C10H22 (l) + 31O2 (g) --> 20CO2 (g) + 22H2O (g) What is t

Aleks [24]

Answer: The ratio of carbon dioxide molecules to oxygen molecules is 20 :31

Explanation:

Combustion is a chemical reaction in which hydrocarbons are burnt in the presence of oxygen to give carbon dioxide and water.

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced combustion reaction is,:

$2C_{10}H_{22}(l)+31O_2(g)\rightarrow 20CO_2(g)+22H_2O(g)$

Thus the ratio of carbon dioxide molecules to oxygen molecules is 20 : 31

3 0

2 years ago

Why does lithium form only lithium oxide and not peroxide or superoxide

Alexandra [31]

Answer:

Lithium does form a peroxide as well as an oxide on burning in air and I suspect the low temperature reaction with air forms a significant amount of peroxide.

8 0

2 years ago

What is the percent by volume of isopropyl alcohol in a solution that contains 45 ml of isopropyl alcohol in 1.4 L of water?

11Alexandr11 [23.1K]

Answer:

3.11%

Explanation:

We express a solution's volume by volume percent concentration, % v/v,

Take the ratio of the isopropyl alcohol (IPA) volume to the total volume of the solution, which is 1400 mL of water+ 45 mL of IPA,

and multiply by 100 to get the percentage: 45/(1400+45) *100 = 0.0311*100 = 3.11%

6 0

2 years ago