5. The heat of fusion of lead is 25 J/g and its melting point is 601 K. How much heat is given off as 3.0 g

Chemistry

1 answer:

PIT_PIT [208]3 years ago

5 0

Answer:

the heat given off is 75 J.

Explanation:

Given;

latent heat of fusion of lead, L= 25 J/g

mass of liquid lead, m = 3.0g

The heat given off is calculated as;

H = Lm

Where;

H is the quantity of heat given off

H = 25 x 3

H = 75 J.

Therefore, the heat given off is 75 J.

You might be interested in

What factors are requierd for cloning

ioda

In mammals and amphibians? An enucleated egg, a donor nucleus (preferably from an early developmental stage such as a blastocyst), and a means to stimulate the egg to be activated as if it had just been fertilized (poking with a needle is sometimes enough)

Or cloning into a vector as in at the level of DNA?
A vector with positve and negative selection markers (like antibiotic resistance and drug susceptibility), an insert, DNA ligase and restriction enzymes, buffer for restriction and ligation. Or if you are doing cloning by PCR, then you need primers, template, nucleotides, RNA pol like Taq polymerase etc.

8 0

3 years ago

Zinc chloride (ZnCl2) and hydrogen (H2) are the products of a single replacement reaction. What are the reactants of this reacti

timurjin [86]

Answer:

B Zn+2HCI

Explanation:

4 0

3 years ago

Chemical reactions that ____ energy will not occur without a source of energy

andrezito [222]

Chemical reactions that release energy will not occur without a source of energy. So the answer is release.