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jekas [21]
3 years ago
13

What volume of a 6.67 M NaCl solution contains 3.12 mol NaCl

Chemistry
1 answer:
jonny [76]3 years ago
5 0
What's the big M? Molecular weight or mol?
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A geologist finds a section of rock that shows was ripple marks. What does it he pr send me or a ripple marks say about the area
n200080 [17]
A beacuse the rock starts to tear away from the water which will then create ripple marks
3 0
3 years ago
What are the benefit of understanding physical properties?
klasskru [66]
Physical properties help identifying a substance and how it changes.
For example: if a substance crushes easily that means it has a low density, but if it’s hard and doesn’t crush easily, that means it has a strong high density.
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Look at the picture below to understand more about physical changes.

5 0
3 years ago
PLEASE HELP ASAP!
hoa [83]

Answer:

A. 145.2 g NH3

B. 0.76 g H2

C. 1.41 x 10^22 molecules NH3

Explanation:

A. 1 mol N2    -> 2 mol NH3

   4.27 mol N2 -> x

x= (4.27 mol N2 * 2 mol NH3)/1 mol N2     x= 8.54 mol NH3

1 mol N2       -> 17 g

8.54 mol N2 -> x        x= 145.2 g NH3

B.

2 g H2  -> 34 g NH3

         x   -> 13.01 g NH3

x= 0.76 g H2

C.

2 g  H2      -> 34 g NH3

0.0235 g H2 -> x

x=   0.39 g NH3

0.39 g NH3 (1 mol NH3/17 g NH3)(6.023 x 10^23 molecules/1 mol NH3) =

1.41 x 10^22 molecules NH3

3 0
3 years ago
HELP NOW!!
s2008m [1.1K]

Given, mass of isotope 1 = 39.06 amu

% abundance of isotope 1 = 10.00%

mass of isotope 2 =  42.14 amu

% abundance of isotope 2 = 90.00%

Average atomic mass

= [ (mass of isotope 1  x % abundance of isotope 1 ) + (mass of isotope 2 x % abundance of isotope 2 ) ]/ 100

= [(39.06 x 10) + (42.14 x 90)]/100

= (390.6 + 3792.6) / 100

= 4183.2/100

= 41.8 (to the nearest tenth)

Therefore, the weighted atomic mass of element Q is 41.8 amu.

6 0
3 years ago
Calculate the amount of H2O2: Using the balanced equation, calculate the number of moles of H2O2 present in the initial solution
igomit [66]

Answer:

5

Explanation:

6

5 0
3 years ago
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