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3 years ago

Which best describes the difference between radiation and conduction? (1 point)

Chemistry

1 answer:

NNADVOKAT [17]3 years ago

6 0

Answer:

B) Conduction requires two objects to be in physical contact.

Explanation:

Conduction is when two objects are directly touching each other. So, the objects must come in physical contact with each other.

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How does the level of intermoleculars bonding between the particles in matter affect the state of matter the particles are takin

Lunna [17]

Explanation:

Intermolecular force s between particles in a matter holds particles of molecules together in substances.

The stronger the intermolecular forces the more solid a substance is.
The weakest intermolecular attraction are found in gases as they have negligible attractive forces in between their particles.
Solids are held together by very strong attractive forces.
Liquids have weak forces holding them in place and this allows for a little movement.
Gases are typically have very weak to negligible attractive forces.

3 0

3 years ago

If the solution of HNO3 has a pH of 8 and a pOH of 6 is it an acid, base or neutral

zloy xaker [14]

I don’t know but I think the answer is C or B

4 0

3 years ago

What is the chemical formula of hydroxide ion?

Setler [38]

Answer:

OH-

Explanation:

6 0

2 years ago

Read 2 more answers

A 200cc container holds a gas at a temperature of 60°C and 10000 Pa. What is the new temperature if volume changes to 100cc and

creativ13 [48]

Answer:

New temp = 135°C

Explanation:

From ideal gas equation

$\frac{p1 \: \times \: v1}{t1} = \frac{p2 \: \times \: v2}{t2} \\$

But; P1 = 10000Pa. P2 = 45000

V1 = 200 cc. V2 = 100 cc

T1 = 60°C. T2 = ??

From our formulae above

$\frac{10000 \times200 }{60} = \frac{45000 \times 100}{t2}$ then T2= 45000×100×60÷ (10000×200)

T2= 135°C

3 0

3 years ago

The active ingredient in toothpaste is sodium fluoride an anticavity agent. A 170. Gube

ivann1987 [24]

There are <u>0.408 grams</u><u> </u>of sodium fluoride in the toothpaste.

Why?

We know that there is 0.24% of sodium floride in a 170 grams toothpaste tube. Since the only information related to the toothpaste is its mass, we can assume that the 0.24% (concentration) is referring to the mass percent, and we can calculate it using the following equation:

$MassPercent=\frac{MassSolute}{MasSolution}*100(percent)$

Now, substituting the given information and calculating, we have:

$MassPercent=\frac{MassSolute}{MasSolution}*100(percent)$

$\frac{MassPercent*MassSolution}{100}=MassSolute(NaF)\\\\MassSolute(NaF)=\frac{0.24*170g}{100}=0.408g$

We have that there are 0.408 grams of sodium fluoride in the toothpaste.

Have a nice day!

6 0

3 years ago