All categories

3 years ago

How is energy transferred when objects are in contact A. Conduction B. Convection C. latent heat D. Radiation

1 answer:

7 0

Your answer is conduction, If there is a difference in temperature between two objects, energy is transferred from the hotter object to the cooler one. ... Energy can be transferred from a hot object to a cooler one.

You might be interested in

What is the product of magnesium metal + silverchloride ?

katrin2010 [14]

Mg + 2AgCl —> MgCl2 + 2Ag

3 0

3 years ago

One molecule is made of two or more _____ bonded together.

gayaneshka [121]

Answer:

One molecule is made of two or more atoms bonded together.

Explanation:

Molecule is a substance which is made up chemically by two or more same or different atoms. The atoms joint together in a molecule due to a chemical bond. This chemical bond is formed either by mutual sharing of electrons or transfer of electrons between two atoms.

Examples:

A molecule of H₂O (water) is made up of two atoms of Hydrogen and one atom of Oxygen (H-O-H).

A molecule of CO₂ (Carbon Dioxide) is formed when a carbon atom is bonded to two oxygen atoms via a double bonds (O=C=O).

A molecule of N₂ (Nitrogen Gas) is formed between two nitrogen atoms through a triple bond (N≡N).

5 0

3 years ago

Read 2 more answers

11. Bacteria and dead cells are removed from circulatory

adoni [48]

Lymph nodes.
The lymphatic system plays as the body’s first line of defense against disease

7 0

3 years ago

determine the empirical and molecular formula of a compound composed of 18.24 g carbon, 0.51 g hydrogen, and 16.91 g fluorine an

Vika [28.1K]

Answer: The empirical formula for the given compound is $C_3HF_2$ and molecular formula for the given compound is $C_{24}H_8F_{16}$

Explanation : Given,

Mass of C = 18.24 g

Mass of H = 0.51 g

Mass of F = 16.91 g

To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Carbon = $\frac{\text{Given mass of Carbon}}{\text{Molar mass of Carbon}}=\frac{18.24g}{12g/mole}=1.52moles$

Moles of Hydrogen = $\frac{\text{Given mass of Hydrogen}}{\text{Molar mass of Hydrogen}}=\frac{0.51g}{1g/mole}=0.51moles$

Moles of Fluorine = $\frac{\text{Given mass of Fluorine}}{\text{Molar mass of Fluorine}}=\frac{16.91g}{19g/mole}=0.89moles$

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 0.51 moles.

For Carbon = $\frac{1.52}{0.51}=2.98\approx 3$

For Hydrogen = $\frac{0.51}{0.51}=1$

For Fluorine = $\frac{0.89}{0.51}=1.74\approx 2$

Step 3: Taking the mole ratio as their subscripts.

The ratio of C : H : F = 3 : 1 : 2

The empirical formula for the given compound is $C_3H_1F_2=C_3HF_2$

For determining the molecular formula, we need to determine the valency which is multiplied by each element to get the molecular formula.

The equation used to calculate the valency is :

$n=\frac{\text{molecular mass}}{\text{empirical mass}}$

We are given:

Molar mass = 562.0 g/mol

Mass of empirical formula = 3(12) + 1(1) + 2(19) = 75 g/eq

Putting values in above equation, we get:

$n=\frac{562.0}{75}=7.49\approx 8$

Multiplying this valency by the subscript of every element of empirical formula, we get:

$C_3HF_2=(C_3HF_2)_n=(C_3HF_2)_8=C_{24}H_8F_{16}$

Thus, the molecular formula for the given compound is $C_{24}H_8F_{16}$

8 0

3 years ago

Which of the following is a chemical property of water? It ___________.

lbvjy [14]

The answer is A beautiful

4 0

4 years ago

How is energy transferred when objects are in contact A. Conduction B. Convection C. latent heat D. Radiation​

How is energy transferred when objects are in contact A. Conduction B. Convection C. latent heat D. Radiation