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Arturiano [62]
2 years ago
11

Question 3 of 8

Chemistry
2 answers:
vitfil [10]2 years ago
7 0

Answer:

B

Explanation:

Readme [11.4K]2 years ago
7 0

Answer:A. Direction

C. Resistance

Explanation:

Forces are due to an interaction of at least two objects. It may change the state of motion of an object. It may change the shape of an object. Forces applied on an object in the same direction add to one another and the resultant is in the same direction.

plz mark brainliest

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Is steel a mixture or pure substance
Inessa [10]
Mixture......................
6 0
3 years ago
Read 2 more answers
What is the hydrogen ion concentration, [H+], of a solution with a pH of 5.43?
grigory [225]

Answer: 3.7 x10−6 Mole per dm^3

Explanation:

pH is the negative logarithm of hydrogen ion concentration in a solution.

So, pH = - log(H+)

Since the solution has a pH of 5.43

5.43 = -log(H+)

To get hydrogen ion concentration, find the Antilog of 5.43

(H+) = Antilog (-5.43)

(H+) = 0.000003715

Then, 0.000003715 in standard form becomes 3.7 x10−6 M

Thus, the concentration of hydrogen ion in the solution is 3.7 x10−6 Mole per dm^3

6 0
2 years ago
List two possible steps where impurities may be gained, which would appear to be an increase in copper
Arisa [49]

Answer:

i) During washing

ii) During Measurement

Explanation:

The two possible steps are :

<u>i) During washing </u>: during the washing method the residue may be not completely dried out and this residue ( water) will add up to the final product ( copper yield ) and this kind of error is called human error.

<u>ii) During measurement </u>: If the weighing instrument is faulty there might be addition  in value of the final copper yield which will see the final yield value > 100% . this error occurs when the initial value and final value is  been weighed

8 0
3 years ago
Determine the molar solubility of agi in pure water. ksp (agi) = 8.51 × 10-17.
Alex787 [66]
When the salt AgI dissolves in water it dissociates as follows;
AgI ---> Ag⁺ + I⁻
molar solubility is the number of moles that are dissolved in 1 L of solution.
If molar solubility of AgI is x, then molar solubility of Ag⁺ is x and I⁻ is x.
the formula for solubility product constant - ksp of AgI is given below 
ksp = [Ag⁺][I⁻]
ksp = (x)(x)
ksp = 8.51 x 10⁻¹⁷ 
therefore,
x² = 8.51 x 10⁻¹⁷
x = 9.22 x 10⁻⁹
since molar solubility of AgI is x, then molar solubility of AgI is 9.22 x 10⁻⁹ M
3 0
2 years ago
When the ocean water freezes or evaporates, the salinity of the ocean
jeka94

Answer:

As water freezes or evaporates, what happens to the salinity of the remaining ocean water? There is no change to salinity.

Explanation:

5 0
2 years ago
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