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fgiga [73]
3 years ago
7

What is the mass in grams of one mole of many of any substance known as

Chemistry
1 answer:
OLEGan [10]3 years ago
7 0
The molecular weight of the substance.
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Solutions
nordsb [41]
D. Yep, D is the answer, alright.
3 0
3 years ago
What’s the answer pls hrlp
arsen [322]

Answer:

The answer is A

Explanation:

5 0
3 years ago
The percent by mass of bicarbonate (HCO3−) in a certain Alka-Seltzer product is 32.5 percent. Calculate the volume of CO2 genera
nevsk [136]

Answer:

The volume of carbon dioxide gas generated 468 mL.

Explanation:

The percent by mass of bicarbonate in a certain Alka-Seltzer = 32.5%

Mass of tablet = 3.45 g

Mass of bicarbonate =3.45 g\times \frac{32.5}{100}=1.121 mol

Moles of bicarbonate ion = \frac{1.121 g/mol}{61 g/mol}=0.01840 mol

HCO_3^{-}(aq)+HCl(aq)\rightarrow H_2O(l)+CO_2(g)+Cl^-(aq)

According to reaction, 1 mole of bicarbonate ion gives with 1 mole of carbon dioxide gas , then 0.01840 mole of bicarbonate ion will give:

\frac{1}{1}\times 0.01840 mol=0.01840 mol of carbon dioxide gas

Moles of carbon dioxide gas  n = 0.01840 mol

Pressure of the carbon dioxide gas = P = 1.00 atm

Temperature of the carbon dioxide gas = T = 37°C = 37+273 K=310 K

Volume of the carbon dioxide gas = V

PV=nRT (ideal gas equation)

V=\frac{nRT}{P}=\frac{0.01840 mol\times 0.0821 atm L/mol K\times 310 K}{1.00 atm}=0.468 L

1 L = 1000 mL

0.468 L =0.468 × 1000 mL = 468 mL

The volume of carbon dioxide gas generated 468 mL.

5 0
3 years ago
Helppppppppppp!!!!!!!!
Natali5045456 [20]

Pressure does not affect the voltage produced in a voltaic cell.

8 0
3 years ago
Which scientist established the law of octaves?
Ray Of Light [21]

Answer:

John Newlands

Explanation:

he established the law of octaves

4 0
3 years ago
Read 2 more answers
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