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g100num [7]
3 years ago
9

Can someone pls help me with this!

Chemistry
1 answer:
inessss [21]3 years ago
8 0

Answer:

weathered rock and deceomposed material

Explanation:

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Calculate the amount of oxygen gas collected by the displacement of water at 14◦C if the atmospheric pressure is 790 Torr and th
zhannawk [14.2K]

Answer : The amount of oxygen gas collected are, 0.217 mol

Explanation :

Using ideal gas equation :

PV=nRT

where,

P = pressure of gas = (790-12)torr=778torr=1.02atm     (1 atm = 760 torr)

V = volume of gas = 5 L

T = temperature of gas = 14^oC=273+14=287K

n = number of moles of gas = ?

R = gas constant  = 0.0821 L.atm/mol.K

Now put all the given values in the ideal gas equation, we get:

(1.02atm)\times (5L)=n\times (0.0821L.atm/mol.K)\times (287K)

n=0.217mole

Thus, the amount of oxygen gas collected are, 0.217 mol

8 0
3 years ago
Find the volume of a gold ring that has a mass of 12.00 grams. The density of gold is 19.30 g/mL. The volume is
kozerog [31]

Answer:

<h3>The answer is 0.622 mL</h3>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density}  \\

From the question

mass = 12 g

density = 19.30 g/mL

We have

volume =  \frac{12}{19.30}  \\  = 0.62176165...

We have the final answer as

<h3>0.622 mL</h3>

Hope this helps you

3 0
3 years ago
If you shake up different kinds or brands of soft drinks will they all spew you the same amount
Morgarella [4.7K]

Answer:

yeah and the point?

Explanation:

3 0
3 years ago
Read 2 more answers
What is the isoelectric point of proteins?
Mekhanik [1.2K]
The isoelectric point<span> (</span>pI, pH(I),IEP<span>), is the pH at which a particular molecule carries no net electrical charge in the statistical mean.</span>
7 0
3 years ago
Read 2 more answers
Please help!!! Need answer fast.
bogdanovich [222]

^ tap to see the full pic

Explanation:

you make use of the formulas

amount(mol) = number of particles ÷ 6.02 × 10^23

and

mass(g) = amount(mol) × molar mass

5 0
3 years ago
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