You have 7.86 x 10^23 molecules of NaCl. This would be equal to ___ grams of NaCl.

Chemistry

1 answer:

sergij07 [2.7K]3 years ago

3 0

$7.86 \times 10 {}^{23} atoms \\ \frac{7.86}{6.022} \times \frac{10 {}^{23} }{ {10}^{23} } = 1.305\: moles$

1.305 × (23+35.5) = 76.34 grams

You might be interested in

What is the ph of a buffer consisting of 0.200 m hc2h3o2 and 0.200 m kc2h3o2? the k a for hc2h3o2 is 1.8×10−5. view available hi

AURORKA [14]

PH = pKa + log $\frac{[base]}{[Acid]}$
Acid is HC₂H₃O₂ and conjugate base is KC₂H₃O₂,
pKa = - log Ka = - log (1.8 x 10⁻⁵) = 4.74
so pH = 4.74 + log (0.2/0.2) = 4.74
This is called maximum buffer capacity (when acid conc. and base conc. are equal) the pH = pKa in this case

6 0

3 years ago

So the relative mass of fluorine in the second compound is one-third that of sf6. what formula expresses one-third the amount of

stealth61 [152]

The formula SF_2 expresses one-third the amount of F.

The F:S ratio in the first compound is 6:1.

We want a compound with one third the amount of F, so F:S = 2:1.

The simplest formula with this ratio is SF_2.

5 0

4 years ago

Amobarbital sodium react with ethanolic sodium hyrooxide

CaHeK987 [17]

Amobarbital (like all barbiturates) works by being incontestible to the GABAA receptor at either the alpha or the beta subunit.

<h3>What is the mechanism of amobarbital?</h3>

Amobarbital (like all barbiturates) works by binding to the GABAA receptor at either the alpha or the beta subunit. These are compulsory sites that are distinct from GABA itself and also distinct from the benzodiazepine binding site.

Amobarbital is a barbiturate classified as having a halfway duration of action, meaning that the effects of the drug can last from 4-6 amobarbital increases the effects of benazepril by apparatus: pharmacodynamic synergism.

So we can conclude that Amobarbital, 5-ethyl-5-isoamyl barbituric acid like all barbiturates.

Learn more about Amobarbital here: brainly.com/question/7237163

#SPJ1

6 0

2 years ago

In a solution the solute is the substance present in the greatest amount true or false

kati45 [8]

Solute is something that is being dissolved { ex : sugar , salt}

Solvent is something that has ability to dissolve things { ex : water}

False because the solvent is present in larger amounts...

3 0

4 years ago

Read 2 more answers

Which statement is correct?

rosijanka [135]

Answer:

B. Chemical changes produce new substances; physical changes do not.

Explanation:

Physical changes only alter appearances, while chemical changes are interactions that create new chemical formulas.

4 0

3 years ago