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Hatshy [7]
3 years ago
13

Calculate the pH if the [H+} = 0.0030 M

Chemistry
1 answer:
NeX [460]3 years ago
7 0

Answer: ph = 2.523

Explanation:

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What allows scientists to find the actual age of some object (or some event)
dangina [55]
They can use carbon dating or lithium argon dating.
5 0
4 years ago
What is Dalton's law of partial pressure?
KatRina [158]

Answer:

C

Explanation:

The law of partial pressure states that if there is a mixture of gases which do not react chemical together, then the total pressure exerted by the mixture is the sum of the partial pressures of the individual gases that make up the mixture

3 0
3 years ago
Read 2 more answers
At high temperatures, carbon reacts with O2 to produce CO as follows: C(s) O2(g) 2CO(g). When 0.350 mol of O2 and excess carbon
777dan777 [17]

Answer:

Value of K_{c} is 0.090.

Explanation:

Initial molarity of O_{2} = \frac{0.350}{5.00}M = 0.0700 M

Construct an ICE table corresponding to the combustion reaction of carbon to determine K_{c}

                       C(s)+O_{2}(g)\rightarrow 2CO(g)

              I (M):    -      0.0700        0

             C (M):  -          -x             +2x

             E (M):   -    0.0700-x       2x

So, K_{c}=\frac{[CO]^{2}}{[O_{2}]}  , where [CO] and [O_{2}] represents equilibrium concentration of CO and O_{2} respectively.

Here, [CO]=2x=0.060

       ⇒x = 0.030

So, [O_{2}] = 0.0700-x = (0.0700-0.030) = 0.040

Hence,  K_{c}=\frac{(0.060)^{2}}{0.040}=0.090

4 0
3 years ago
Now that you have exercised, walked your
ASHA 777 [7]

Answer: The moles of melatonin are 0.000043

Explanation:

According to avogadro's law, 1 mole of every substance weighs equal to its molecular mass and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

Given mass of melatonin = 0.01 g

Molar mass of melatonin (C_{13}H_{16}N_2O_2) = 232.28 g/mol

\text{Number of moles of melatonin}=\frac{0.01 g}{232.28g/mol}=0.000043mol

Thus the moles of melatonin in 0.01 g are 0.000043

4 0
3 years ago
Which of the following would a chemist be most likely to study?
qaws [65]
B. because the other options are different sciences (biology and entomology)
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3 years ago
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