All categories

4 years ago

Which of the following is not true of alloys?

Chemistry

1 answer:

Scilla [17]4 years ago

7 0

Option d: copper.

Because copper is an element, not a mixture.

You might be interested in

True or False Water particles move with the waves.

g100num [7]

The answer would be , True

8 0

3 years ago

against at -20 degree centigrade occupied the volume of one 40 ml calculate the temperature at which the volume of cash pickup 6

worty [1.4K]

The final temperature :T₂=411.125 K = 138.125 °C

<h3>Further explanation</h3>

Given

T₁=-20 °C+273 = 253 K

V₁=40 ml

V₂=65 ml

Required

Final temperature

Solution

Charles's Law

When the gas pressure is kept constant, the gas volume is proportional to the temperature

$\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}$

Input the value :

T₂=(V₂.T₁)/V₁

T₂=(65.253)/40

T₂=411.125 K = 138.125 °C

4 0

3 years ago

Explain how Earth is heated through radiation.

MatroZZZ [7]

Heat from the Earth's core and radiation from the Sun is transferred to the surface of the Earth by conduction. Contact of the atmosphere with these warm surfaces transfers thermal energy, which then heats up the rest of the air through convection

7 0

3 years ago

A chemist divides a large sample of a mixture into three smaller portions. Each of these portions contains different ratios of t

ehidna [41]

Answer:

Heterogeneous mixture

Explanation:

A mixture is a substance that is made up of different components that are not chemically combined. For example, the air is a mixture containing gaseous components.
A pure substance, on the other hand, is a substance that contains similar particles. For example, an element is a pure substance with similar atoms and a compound is a pure substance with similar molecules.
A mixture may either be homogeneous or heterogeneous.
A homogeneous mixture contains various fractions of components in a single-phase while a heterogeneous mixture contains components in different phases and different ratios.

3 0

4 years ago

Read 2 more answers

WILL GIVE BRAINLIEST

seropon [69]

Answer:

Chemical reaction A, because the reactant is a compound

Explanation:

In a decomposition reaction, a compound is broken down into its components, so the number of products is greater than the number of reactants

3 0

2 years ago