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2 years ago

Which words help you to determine the meaning of the word declerate in paragraph 3 ?

Chemistry

1 answer:

Nonamiya [84]2 years ago

8 0

There is nothing attached to the question but this is the definition.

verb (used with object), de·cel·er·at·ed, de·cel·er·at·ing. to decrease the velocity of: He decelerates the bobsled when he nears a curve. to slow the rate of increase of: efforts to decelerate inflation.

Edit: reduce or cause to reduce in speed.

"the train began to decelerate"

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2 years ago

Read 2 more answers

A student needs to prepare 50.0 mL of a 1.20 M aqueous H2O2 solution. Calculate the volume of 4.9 M H2O2 stock solution that sho

Nonamiya [84]

Answer : The volume of 4.9 M $H_2O_2$ stock solution used to prepare the solution is, 12.24 ml

Solution : Given,

Molarity of aqueous $H_2O_2$ solution = 1.20 M = 1.20 mole/L

Volume of aqueous $H_2O_2$ solution = 50.0 ml = 0.05 L

(1 L = 1000 ml)

Molarity of $H_2O_2$ stock solution = 4.9 M = 4.9 mole/L

Formula used :

$M_1V_1=M_2V_2$

where,

$M_1$ = Molarity of aqueous $H_2O_2$ solution

$M_2$ = Molarity of $H_2O_2$ stock solution

$V_1$ = Volume of aqueous $H_2O_2$ solution

$V_2$ = Volume of $H_2O_2$ stock solution

Now put all the given values in this formula, we get the volume of $H_2O_2$ stock solution.

$(1.20mole/L)\times (0.05L)=(4.9mole/L)\times V_2$

By rearranging the term, we get

$V_2=0.01224L=12.24ml$

Therefore, the volume of 4.9 M $H_2O_2$ stock solution used to prepare the solution is, 12.24 ml

3 0

2 years ago

The atomic number of lead is 82. Its mass number is 207?.how many protons neutrons and electros does the atom of lead contain

kupik [55]

Lead have:

82 electrons

82 protons

125 neutrons

Explanation:

The number of electrons and protons are given by the atomic number of the element.

Lead have 82 electrons and 82 protons.

The number of neutrons are given by the difference between the mass number and atomic number.

For lead number of neutrons = 207 - 82 = 125.

Learn more about:

particles in the atom

brainly.com/question/439508

#learnwithBrainly

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