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3 years ago

How many grams nh3 are equivalent to 9.3 x 1023 molecules nh3?

1 answer:

4 0

To solve this, we need the Avogadros number to convert to moles then multiply with molar mass to convert to mass in grams.

moles = 9.3 x 10^23 molecules * (1 mol / 6.022 x 10^23 molecules)

moles = 1.54 moles

Molar mass of NH3 is 17 g/mol:

mass = 1.54 moles * 17 g/mol

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In an experiment, 107.9 grams of H2SO, is produced when 196.2 grams

Ipatiy [6.2K]

Answer:

54.99% yield

Explanation:

percent yield is just the amount you obtained over the amount expected times 100%.

(experimental value/theoretical value) x 100%

= (107.9 g/196.2 g) x 100%

=54.99% yield

5 0

2 years ago

How many hydrogen atoms are in each molecule of trisilylamine?

lord [1]

Answer:

<u>9</u>

Explanation:

The amine functional group is obtained by subsititution of one or more hydrogen atoms in the ammonia compound.

Ammonia is NH₃.

Then,

by substituting one hydrogen you obtain R - NH₂.

by substituting two hydrogens you obtain R' - NH - R''

by subsituting the three hydrogens you obtain:

R'''

R' - N - R''

In this case, the three subsitutuents are silyl groups. The silyl group is derived form silane and is SiH₃. So, the tcompound <em>trisilylamine</em> is:

SiH₃

SiH₃ - N - SiH₃

Thus, you can count 3 hydrogen atoms for every silylgroup for a total of <u><em>9 hydrogen atoms in each molecule of trisilylamine.</em></u>

7 0

2 years ago

What is the molar mass of CuCIO3

Genrish500 [490]

<h3>Answer:</h3>

147.05 g/mol

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Chemistry</u>

<u>Atomic Structure</u>

Reading a Periodic Table

<h3>Explanation:</h3>

<u>Step 1: Define</u>

CuClO₃

Molar Mass of Cu - 63.55 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of CuClO₃ - 63.55 + 35.45 + 3(16.00) = 147.05 g/mol

5 0

2 years ago

Mercury has a density of 13.6 g/mL. How many milliliters of mercury have a mass of 350 g? *

Colt1911 [192]

solution:

density x volume=mass volume x volume

13.6gml x 3.55ml

thus,the object has a mass of 98.3g

7 0

2 years ago

A sample of carbon dioxide occupies a volume of 2.50L liters at 300kPa pressure and a temperature 273K. What pressure would the

Drupady [299]

Answer:

The answer to your question is: P2 = 846 kPa

Explanation:

Data

V1 = 2.5 l

P1 = 300 kPa

T1 = 273 °K

P2 = ?

V2 = 1 l

T2 = 308°K

Formula

$\frac{P1V1}{T1} = \frac{P2V2}{T2}$

$P2 = \frac{P1V1T2}{T1V2} \\$

$P2 = \frac{(300)(2.5)(308)}{(273)(1)} \\$

$P2 = \frac{231000}{273} \\$

P2 = 846 kPa

5 0

2 years ago