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Orlov [11]
3 years ago
9

20 Points!!!!!!!!!!!! Please Help!!!!

Chemistry
2 answers:
mrs_skeptik [129]3 years ago
5 0
#1 is actually C.. Carrying Capacity is the population size an environment can sustain. Thats what my study guide says. <span />
mamaluj [8]3 years ago
3 0
Number 1: (A.)
Number 2: (A.)
Number 3: (B.)

I'm probably wrong but that is what i think
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A _____ solution contains more dissolved solute than a saturated solution at the same temperature.
klemol [59]
The answer according to my teacher would be Supersaturated
5 0
3 years ago
Copper has two naturally occurring isotopes. Cu−63 has a mass of 62.939 amu and relative abundance of 69.17%.
fiasKO [112]
The answer is 64.907 amu.

The atomic mass of an element is the average of the atomic masses of its isotopes. The relative abundance of isotopes must be taken into consideration, therefore:
atomic mass of copper = atomic mass of isotope 1 * abundance 1 + atomic mass of isotope 2 * abundance 2

We know:
atomic mass of copper = 63.546 amu
The atomic mass of isotope 1 is: 62.939 amu
The abundance of isotope 1 is: 69.17% = 0.6917
The atomic mass of isotope 1 is: x
The abundance of isotope 2: 100% - 69.17% = 30.83% = 0.3083

Thus:
63.546 amu = 62.939 amu * 0.6917 + x * 0.3083
63.546 <span>amu = 43.535 amu + 0.3083x
</span>⇒ 63.546 amu - 43.535 amu = 0.3083x
⇒ 20.011 amu = 0.3083x
   ⇒ x = 20.011 amu ÷ 0.3083 = 64.907 amu
7 0
3 years ago
Which side does the light always start from?
jarptica [38.1K]

Answer:

in prism

it's from the rectangular reflecting surface

7 0
2 years ago
*
NISA [10]

Answer:

B: +3

Explanation:

If Gallium loses 3 electrons, it will become an ion.

The ion will be positively charged because in this new ion, the number of electrons is lesser than the number of protons. The charge difference will impart a positive net charge on the ion.

  • In a neutral atom, the number of electrons and protons are the same.
  • For positively charged ions, the number of protons is greater than the electrons

If Gallium the loss of 3 electrons offsets the charge balance in the chemical specie. Thus, the ion will have a net +3 charge.

3 0
2 years ago
Compounds that have the exact same molecular formula but are arranged differently are<br> called?
Marysya12 [62]

Answer:

isomers

Explanation:

Compounds that have the same molecular formula but different chemical structures are called isomers. Remember isomerism is a property between a pair (or more) of molecules, i.e. a molecule is an isomer of another molecule.

3 0
3 years ago
Read 2 more answers
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