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Phantasy [73]
3 years ago
15

Please help (i know this is a lot but it makes no sense!!!!)

Chemistry
1 answer:
stealth61 [152]3 years ago
6 0
Is this math or chemistry....:
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Help asap for brainlist
-Dominant- [34]

Answer:

Function A: +3

Function B: +2

y intercept is greater in Function B, the value is 16

Explanation:

3 0
2 years ago
Really need help on this thing plz someone... help number 2 and 3:(
olasank [31]

Answer:

I don't have one sorry

Explanation:

it's because I can't see the question I don't know it I'm sorry dude

8 0
2 years ago
How many cu atoms are present in a piece of sterlingsilver jewelry weighing 33.24 g ? (sterling silver is a silver–copper alloy
emmasim [6.3K]

The mass of piece of sterling silver jewelry is 33.24 g. It contains 92.5% silver Ag by mass. Since, sterling silver is an alloy of Ag-Cu thus, percentage of Cu will be:

% Cu=100-92.5=7.5%

Thus, mass of copper will be:

m_{Cu}=\frac{7.5}{100}\times 33.24 g=2.493 g

Molar mass of Cu is 63.546 g/mol, thus, number of moles of Cu can be calculated as follows:

n=\frac{m}{M}

Here, m is mass and M is molar mass.

Putting the values,

n=\frac{2.493 g}{63.546 g/mol}=0.03923 mol

Now, in 1 mole of Cu there are 6.303\times 10^{23}atoms thus, in 0.03923 mol, number of Cu atoms will be:

0.03923 mol\times 6.303\times 10^{23}atoms=2.363\times 10^{22} atoms

Thus, number of atoms of Cu will be2.363\times 10^{22} atoms.


8 0
3 years ago
What is the V2O5 coefficient??
AnnyKZ [126]

Answer:

1235

Explanation:

if thers a  a guess in that number

6 0
3 years ago
What is the frequency of radiation.
Ivenika [448]

RADIATION. Radio waves, microwaves, IR, light, UV, x-rays, GAMMA waves etc are ALL Electromagnetic radiation. The difference between ALL the above is the frequency, I.E. The number of waves per second. The higher the frequency the more energy.

5 0
3 years ago
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