3 years ago

What is the molarity of 0.26 mol of H2SO4 dissolved in 0.3 L of solution? *

Chemistry

1 answer:

irina1246 [14]3 years ago

7 0

Answer:

Explanation:

molarity=moles of solute/liter of solution

molarity=0.26/0.3

molarity=0.87molar

You might be interested in

If an object has a density of 0.55 g/mL, what is its density in cg/L?

otez555 [7]

if 1 g is equal to 100 cg

then 0.55 g are equal to X cg

X = (0.55 × 100 ) / 1 = 55 cg

The density of the object is 55 cg/L.

7 0

4 years ago

Read 2 more answers

What is one energy transformation that is taking place in the photo?

Galina-37 [17]

I'm guessing the photo means photosynthesis. In that case, it is solar energy to chemical energy. Radiant energy and solar energy is kind of the same thing, so 4th answer.

4 0

2 years ago

Read 2 more answers

How many half-lives are required for the concentration of reactant to decrease to 1.56% of its original value?4247.56.56

neonofarm [45]

Answer:

6 half-lives are required for the concentration of reactant to decrease to 1.56% of its original value.

Explanation:

Using integrated rate law for first order kinetics as:

$[A_t]=[A_0]e^{-kt}$

Where,

$[A_t]$ is the concentration at time t

$[A_0]$ is the initial concentration

Given:

Concentration is decreased to 1.56 % which means that 0.0156 of $[A_0]$ is decomposed. So,

$\frac {[A_t]}{[A_0]}$ = 0.0156

Thus,

$\frac {[A_t]}{[A_0]}=e^{-k\times t}$

$0.0156=e^{-k\times t}$

kt = 4.1604

The expression for the half life is:-

Half life = 15.0 hours

$t_{1/2}=\frac {ln\ 2}{k}$

Where, k is rate constant

So,

$k=\frac {ln\ 2}{t_{1/2}}$

$\frac{4.1604}{t}=\frac {ln\ 2}{t_{1/2}}$

$t = 6\times t_{1/2}$

<u>6 half-lives are required for the concentration of reactant to decrease to 1.56% of its original value.</u>

6 0

3 years ago

An object can become electrically charged if it gains or loses which particles?

Sunny_sXe [5.5K]

Answer:

if it gains or loses neutrons

6 0

3 years ago

Read 2 more answers

Match each pH value with the correct description. 7, 2, 8, 13, and 6 :)

bazaltina [42]

1.strong acid: 2
2.weak acid:6
3.strong base:13
4.weak base:8
5.neutral:7

8 0

3 years ago