All categories

3 years ago

(4.1357 x 10^-15) x (5.4 x 10^2) Answer must be in scientific notation

Chemistry

1 answer:

nadya68 [22]3 years ago

5 0

Answer:

22×10⁻¹³

Explanation:

Scientific notation:

Scientific notation is the way to express the large value in short form.

The number in scientific notation have two parts.

The digits (decimal point will place after first digit)

× 10 ( the power which put the decimal point where it should be)

for example the number 6324.4 in scientific notation will be written as = 6.3244 × 10³

When we multiply or divide the values the number of significant figures must be equal to the less number of significant figures in given value. Thus, in given value,

(4.1357× 10⁻¹⁵) × (5.4×10²)

22×10⁻¹³

You might be interested in

If 3.89 × 1024 atoms of a noble gas is collected and it has a mass of of 848 grams, this element is most likely a. He b. Ne c. A

bearhunter [10]

Answer:

Xenon

Explanation:

Avogadro’s number represent the number of the constituent particles which are present in one mole of the substance. It is named after scientist Amedeo Avogadro and is denoted by $N_0$ .

Avogadro constant:-

$N_a=6.023\times 10^{23}$

Let the molar mass of the element is x g/mol

So,

$6.023\times 10^{23}$ atoms have a mass of x g

Also,

$3.89\times 10^{24}$ atoms have a mass of $\frac{x}{6.023\times 10^{23}}\times 3.89\times 10^{24}$ g

This mass is equal to 848 g

So,

$\frac{x}{6.023\times 10^{23}}\times 3.89\times 10^{24}=848$

x= 131.3 g/mol

This mass correspond to xenon.

3 0

3 years ago

What is the compounds of AICI3 and H+

Kobotan [32]

Answer:

Aluminium Chloride and Hyrdron, also known as proton/

Explanation:

7 0

3 years ago

:answer question number 6

solong [7]

Answer: C?

Explanation:

5 0

2 years ago

Temperature change chemical reaction example

boyakko [2]

Answer:

The heating and melting of candle wax

Explanation:

It heats up, but when cooled it hardens and cannot be put back into its original form.

Hope this helps

Please mark me as Brainliest

3 0

2 years ago

What do vaccines simulate the production of?

Aleksandr [31]

Answer:

Vaccines are diluted germs that are injected or otherwise introduced into the body. As a result of getting a vaccine, the person will be protected from developing the disease at a later date

Explanation:

5 0

2 years ago