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3 years ago

A material that is not a mixture; has the same properties all the way through

Chemistry

1 answer:

Marta_Voda [28]3 years ago

5 0

Answer:

Explanation:

The material that is not a mixture; it has the same properties all the way through is called a substance. Thus the material that is not a mixture; it has the same properties all the way through is called a substance.

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During the formation of a chemical bond between two hydrogen atoms, which of the following statements is always true?

Wewaii [24]

A) Energy is released during the formation of the bond.

Explanation:

During the formation of a chemical bonds between two hydrogen atoms, energy is always released during the formation of this bond type.

Bond formation process is usually exothermic and energy is released during the formation of the bond.

Bond breaking process is an endothermic process in which energy is absorbed from the surrounding.
Whenever a bond is broken, the bond energy value is positive but when a bond is formed, the bond energy value is given a negative sign.

For a bond formation process in which hydrogen atoms are bonded covalently, energy is usually released.

Learn more:

Enthalpy changes brainly.com/question/10567109

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3 years ago

Given the following reaction: NH4SH (s) <--> NH3 (g) + H2S (g) If we start

almond37 [142]

Answer:

D. 0.3 M

Explanation:

NH4SH (s) <--> NH3 (g) + H2S (g)

Initial concentration 0.085mol/0.25L 0 0

Change in concentration -0.2M +0.2 M +0.2M

Equilibrium 0.035mol/0.25 L=0.14M 0.2M 0.2M

concentration

Change in concentration (NH4SH) = (0.085-0.035)mol/0.25L =0.2M

K = [NH3]*[H2S]/[NH4SH] = 0.2M*0.2M/0.14M ≈ 0.29 M ≈ 0.3M

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3 years ago

Help me pls Idk the answers

gayaneshka [121]

I’m very sorry but I don’t know how to answer that question.

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3 years ago

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What is it called when <br> Light changes direction and slows down when it enters water from air.

scoray [572]

This should be called refraction

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Iron has a density of 7.86 g/cm3. calculate the volume (in dl) of a piece of iron having a mass of 3.72 kg

GaryK [48]

Density is the mass divided by the volume of the object

$\rho = \frac{m}{V}$

you know denisty and you know mass so you can determine volume if you rearrange the formula

$V= \frac{m}{\rho}$

however, when you're doing the division, make sure the units match, since density is given in grams and mass is given in kilograms

once you have volume in cm3, convert that into "dl"

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3 years ago