All categories

3 years ago

I need this answer ASAP! In order for conduction to transfer heat from one object to another, what must be true?

Chemistry

1 answer:

vampirchik [111]3 years ago

6 0

Answer:

The objects should be far apart. There must be air circulation. The objects need to be touching. Solar energy is required.

Explanation:

You might be interested in

Which segment represents melting?"<br> Temperature (°C)<br> Time (minutes)

zheka24 [161]

The segment that represents melting is time (minutes) and temperature.

4 0

3 years ago

Which of the following molecules would be the best hydrogen bond donor?

leva [86]

Answer: Option (d) is the correct answer.

Explanation:

When a hydrogen atom comes in contact with an electronegative atom then it results in the formation of a chemical bond.

More is the electronegativity of combining atom, more stronger will be the bond with hydrogen atom. As a result, the compound formed will not easily give up hydrogen atom upon dissociation.

Whereas less is the electronegativity of atom combining with hydrogen atom, easily it will donate the hydrogen atom upon dissociation.

Since, out of the given option sulfur (S) atom has low electronegativity as compared to oxygen and nitrogen atom.

Hence, $CH_{3}SH$ will easily donate hydrogen atom.

Thus, we can conclude that $CH_{3}SH$ molecule would be the best hydrogen bond donor.

4 0

3 years ago

1.) Convert 202.1 km to millimeters

Dmitry_Shevchenko [17]

Answer: 2.021 x 10^8 mm or 202,100,000

Explanation: Going from km to mm, you move the decimal place 6 times to the right.

3 0

3 years ago

What is the molecular formula of a compound with the empirical SO and molecular weight 96.13?

katovenus [111]

Answer:

Explanation: A compound with the empirical formula SO has a molecular weight of 96.13

5 0

4 years ago

A certain substance X has a normal boiling point of 134.5°C and a molal boiling point elevation constant =Kb1.36·°C·kgmol−1 . Ca

erastova [34]

Answer:

136.5°C

Explanation:

Given data

Boiling point of X: 134.5°C

Molal boiling point elevation constant (Kb): 1.36·°C·kg.mol⁻¹

We can calculate the elevation in the boiling point (ΔT) using the following expression.

ΔT = Kb × m

where,

m is the molality

The molar mass of urea is 60.06 g/mol. The moles of urea corresponding to 76 g is:

76 g × (1 mol/60.06g) = 1.3 mol

The mass of the solvent (X) is 850 g = 0.850 kg.

The molality is:

m = 1.3 mol / 0.850 kg = 1.5 mol/kg

Then,

ΔT = Kb × m

ΔT = 1.36·°C·kg.mol⁻¹ × 1.5 mol/kg

ΔT = 2.0 °C

The boiling point of the solution is

134.5°C + 2.0°C = 136.5°C

3 0

4 years ago