3 years ago

Select the correct mass for each of the samples described below. 3.01 × 1023 molecules H2O

Chemistry

1 answer:

Pani-rosa [81]3 years ago

6 0

Answer:

9.00 g H2O

Explanation:

Convert molecules to grams using stoichiometry

(3.01 * 10^23 molecules) * (1 mole H2O / 6.022 * 10^23 molecules) * (18.01 g / 1 mole H2O) = 9.00 g H2O

You might be interested in

The complex [FeSCN]2+ has an absorptivity of 6.14×10−2 L/(mg⋅cm) at a wavelength of 580 nm. The transmittance of a solution samp

klio [65]

Answer:

4.36 ppm

Explanation:

First we convert percent transmittance to absorbance:

A = 2 - log(%T)

A = 0.268

Then we calculate the concentration of the solution, using Lambert-Beer's equation:

A = ε*l*C

It is usually used with molar concentrations but given that the given absortivity is in ppm terms and the answer is also in ppm, we can simply use the given value.

0.268 = 6.14x10⁻²L·ppm⁻¹ * 1.00 cm * C

C = 4.36 ppm

4 0

3 years ago

Identify the substance that conducts electricity.

Umnica [9.8K]

Answer:

KBr dissolved in water.

Explanation:

A substance conducts electricity as a result of the presence of mobile ions in the substance.

An ionic substance such as KBr when dissolved in water releases free ions which become charge carriers in solution hence the solution conducts electricity. Solid ionic substances such as solid KBr and solid baking soda do not conduct electricity because the ions are strongly bound to each other in the crystal lattice.

Molecular substances such as sugar and alcohol do not conduct electricity even in solution.

8 0

3 years ago

PLZ HELP?! 50 points Write the correct IUPAC name for the following compound

slamgirl [31]

Answer:

2-ethly-3-5 dimethylheptam

Explanation:

trust meeeeee

3 0

2 years ago

In our simulation what did the σ (sigma) stand for?

soldier1979 [14.2K]

Answer:

C -The atomic radius

Explanation:

I took the test :)

6 0

3 years ago

Which of the following substances will have the strongest intermolecular forces?

lilavasa [31]

I think B because tiple bond

7 0

3 years ago