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olga nikolaevna [1]

3 years ago

12

State two differences between a metal and a nonmetal.

1 answer:

alisha [4.7K]3 years ago

8 0

Answer: The two differences between a metal and a non-metal are as follows-

Metals are used for the conduction of electricity, whereas non-metals are poor conductor of electricity.
Metals can be deformed into thin wire-shapes, where as non metals are brittle in nature.
Metals have a high melting point, whereas a non metal comparatively has a low melting point.

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Is bread a molecule or a compound

Papessa [141]

Answer:

Bread is a Molecule.

Explanation:

This is what I found.

Bread cannot be classified as a compound. Compounds are formed when two or more substances are bonded together chemically, however, mixtures are not chemically bonded.

The chemical building blocks of bread are proteins and starch. Starch molecules are long, chained polymers of simple sugars (such as glucose) joined end to end by chemical bonds. Proteins on the other hand are more complex, made up of varying combinations of different amino acids.

Hope this helps.

7 0

3 years ago

4 moles of monoatomic ideal gas is compressed adiabatically causing the temperature to increase from 300 K to 400 K. Calculate t

yawa3891 [41]

Answer:

the work done on the gas is 4,988.7 J.

Explanation:

Given;

number of moles of the monoatomic gas, n = 4 moles

initial temperature of the gas, T₁ = 300 K

final temperature of the gas, T₂ = 400 K

The work done on the gas is calculated as;

$W = \Delta U = nC_v(T_2 -T_1)$

For monoatomic ideal gas: $C_v = \frac{3}{2} R$

$W = \frac{3}{2} R \times n(T_2-T_1)$

Where;

R is ideal gas constant = 8.3145 J/K.mol

$W = \frac{3}{2} R \times n(T_2-T_1) \\\\W = \frac{3}{2} (8.3145) \times 4(400-300) \\\\W = \frac{3}{2} (8.3145) \times 4(100)\\\\W = 4,988.7 \ J$

Therefore, the work done on the gas is 4,988.7 J.

4 0

3 years ago

Identify oxidation. Group of answer choices loss of electrons loss of electron or an increase in oxidation number gain of proton

STatiana [176]

Explanation:

loss of electron or an increase in oxidation number

4 0

3 years ago

Indicator paper can be used to measure the _________________ of a solution. indicators are substances that are different _______

Ede4ka [16]

sorry, but im just learning some chemistry myself so i only know that the 1st blank is: Ph

hope you can find what the other 2 blanks are

3 0

3 years ago

A certain electrolyte solution contains 1 gram of salt for every 8 grams of sugar and every 200 grams of water. If the sugar to

12345 [234]

Answer:

The resulting solution contains approximately 666 g of water.

Explanation:

In the initial solution we have:

1g salt : 8g sugar : 200g water

This means that the ratios are:

$\frac{salt}{sugar} = \frac{1}{8} \\\\\frac{sugar}{water} = \frac{8}{200} =\frac{1}{25}$

In the final solution we have:

5g salt: xg sugar: yg water

The new ratios are:

$\frac{salt}{sugar} = \frac{3}{8} \\\\\frac{sugar}{water} = \frac{1}{50}$

Now we can calculate the amount of sugar in the final solution:

$\frac{salt}{sugar} = \frac{5}{x} =\frac{3}{8} \\\\X = 13.333 g$

Finally, we calculate the amount of water:

$\frac{sugar}{water} = \frac{13.333}{y} = \frac{1}{50} \\y = 666.667 g$

4 0

3 years ago