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3 years ago

What metal has the highest melting point and what is it used for?

Chemistry

1 answer:

irina1246 [14]3 years ago

5 0

Tungsten and it is used in electric contact and arc wielding. I believe there are a few more uses.

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How much energy is required to evaporate grams of water?.

gregori [183]

Answer:

energy known as the latent heat of vaporization is required to break the hydrogen bonds. At 100 °C, 540 calories per gram of water are needed to convert one gram of liquid water to one gram of water vapour under normal pressure.

Explanation:energy known as the latent heat of vaporization is required to break the hydrogen bonds. At 100 °C, 540 calories per gram of water are needed to convert one gram of liquid water to one gram of water vapour under normal pressure.

5 0

2 years ago

Read 2 more answers

Give an example of a reaction where the following are involved:

aleksandr82 [10.1K]

Explanation:

everything can be found in the picture

4 0

3 years ago

The molar mass of iron(Fe) is 55.8 g/mol. what is the mass in grams of 2.25 moles of iron?

AnnyKZ [126]

Try this solution:

if 1 mole is 55.8 gr., then 2.25 moles the mass should be 55.8*2.25=125.55 gr.

Answer: 125.55 gr.

7 0

3 years ago

What determines how hard an atom attracts electrons in a covalent bond?

Evgen [1.6K]

The electronegativity of an atom describes how much an atom attracts an electron, whether it be in a covalent bond or just on its own.

7 0

3 years ago

This equation represents a:

Leto [7]

Answer : The correct option is, (D) double replacement reaction

Explanation :

Synthesis reaction : A chemical reaction where multiple substances or reactants combine to form a single product.

It is represented as,

$X+Y\rightarrow XY$

Decomposition reaction : A chemical reaction in which larger reactant decomposes to give two or more than two products.

It is represented as,

$AB\rightarrow A+B$

Single replacement reaction : A chemical reaction in which the more reactive element replace the less reactive element.

It is represented as,

$A+BC\rightarrow AC+B$

In this reaction, A is more reactive element and B is less reactive element.

Double replacement reaction : It is a type of chemical reaction where a positive cation and a negative anion of two reactants exchange places to form two new products.

It is represented as,

$XY+AB\rightarrow XB+AY$

(X and A are the cations, Y and B are the anions)

The given reaction is:

$2NaCl(aq)+CuSO_4(aq)\rightarrow Na_2SO_4(aq)_CuCl_2(aq)$

This reaction is a double displacement reaction.

6 0

3 years ago