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LuckyWell [14K]
4 years ago
8

What is the ph of the solution in which the h+ is 1.0 x10-4 mol/l

Chemistry
1 answer:
Gwar [14]4 years ago
6 0
The definition and formula to calculate pH is:

pH = log { 1 / [H+] }

So, the pH of this solution, whose molar concentration of H+ is [H+] = 1.0 * 10^-4, is:

pH = log { 1 / (1.0 * 10 ^-4) } = log (10^4) = 4

Answer: option C. 4.00
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A very hot cube of copper metal (32.5 g) is submerged into 105.3 g of water at 15.4 0C and it reach a thermal equilibrium of 17.
zysi [14]

Answer:

The initial temperature of the metal is 84.149 °C.

Explanation:

The heat lost by the metal will be equivalent to the heat gain by the water.  

- (msΔT)metal = (msΔT)water

-32.5 grams × 0.365 J/g°C × ΔT = 105.3 grams × 4.18 J/g °C × (17.3 -15.4)°C

-ΔT = 836.29/12.51 °C

-ΔT = 66.89 °C

-(T final - T initial) = 66.89 °C

T initial = 66.89 °C + T final

T initial = 66.89 °C + 17.3 °C

T initial = 84.149 °C.

7 0
3 years ago
What would be the mass in grams of 1.204 x 1024 molecules of sulfur dioxide
melomori [17]

Answer:

mass of sulfur = 96 g

Explanation:

no of moles of sulfur dioxide in 1.204\times 10^{24} molecules = \frac{1.204\times 10^{24}}{avagadro number }= \frac{1.204\times 10^{24}}{6.023\times 10^{23}}

                                       = 2 moles

therefore mass of sulfur dioxide = moles×atomic number

                                                      =2×(16+32)

                                                      =96

6 0
3 years ago
What specific electrophile does benzene attack when it undergoes nitration??
Deffense [45]
<span><span>The reaction is as follows:
        C6H6   </span>+   HNO3   +      H2SO4     ------------> </span>C6H5NO2<span>   +   H</span>2<span>O
(BENZENE) (NITRIC ACID)(CATALYST)
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3 years ago
PLS HELPP DUE TODAY NEED DONE
Zarrin [17]

Answer:

Explanation:

Each coil increases it by a multiple of 100.

=> 50 | 3 | <u><em>15,000</em></u>

=> 100 | 3 | <u><em>30,000</em></u>

=> 150 | 3 | <u><em>45,000</em></u>

3 0
2 years ago
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Why are scientific models important in the study of science? A. They are useful only for teaching students about science. B. The
madreJ [45]
The correct answer should be B.
The correct answer would be B.
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