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3 years ago

10

What defines a "super acid" and what makes them unique?

1 answer:

MrRa [10]3 years ago

4 0

A super acid is defined as an acid with acidity greater than 100% pure H2SO4. It can also be defined as a medium in which the chemical potential of the proton is higher than in pure Sulphuric Acid.

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What causes the earth’s magnetic field? (I picked the first one but brainliest for which one is right)

makvit [3.9K]

i'm pretty sure the answer you chose is correct

5 0

3 years ago

A weather balloon is filled with helium that occupies a volume of 3.93 104 L at 0.995 atm and 32.0°C. After it is released, it r

user100 [1]

Answer: Thus the volume of the balloon at that new location is $4.65\times 10^4L$

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1$ = initial pressure of gas = 0.995 atm

$P_2$ = final pressure of gas = 0.720 atm

$V_1$ = initial volume of gas = $3.93\times 10^4L$

$V_2$ = final volume of gas = ?

$T_1$ = initial temperature of gas = $32.0^oC=273+32.0=305.0K$

$T_2$ = final temperature of gas = $-11.7^oC=273-11.7=261.3K$

Now put all the given values in the above equation, we get:

$\frac{0.995\times 3.93\times 10^4}{305.0}=\frac{0.720\times V_2}{261.3}$

$V_2=4.65\times 10^4L$

Thus the volume of the balloon at that new location is $4.65\times 10^4L$

4 0

3 years ago

Calculate the average atomic mass of B. The isotopes and abundances are 10B, 19.80% and 11B, 80.20%. Round answer to 3 significa

timama [110]

Given,

The two isotopes of B are 10B and 11B

% abundance of 10B = 19.80

% abundance of 11B = 80.20

Average atomic mass of B

= $\frac{(mass of 10B)(abundance of 10B) + (mass of 11B)(abundance of 11B)}{100}$

= $\frac{(10)(19.80) + (11)(80.20)}{100}$

= $\frac{198 + 882.2}{100}$

= $\frac{1080.2}{100}$

= 10.802

Therefore, the average atomic mass of B is 10.802 u

8 0

4 years ago

Read 2 more answers

Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation:

zzz [600]

Answer:

1

1

1

1

Explanation:

the equation is balancing

4 0

3 years ago

Read 2 more answers

A piece of charcoal is found to contain

Naddika [18.5K]

Answer: The tree died 9709.46 years before.

Explanation:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant = 100

a - x = amount left after decay process = $\frac{30}{100}\times 100=30$

a) to find rate constant

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

$t_{\frac{1}{2}}=\frac{0.693}{k}$

$k=\frac{0.693}{5600years}=1.24\times 10^{-4}years^{-1}$

b) to know the age

$t=\frac{2.303}{1.24\times 10^{-4}}\log\frac{100}{30}$

$t=9709.46years$

The tree died 9709.46 years before.

8 0

3 years ago