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3 years ago

Express the following number in scientific notation. 0.026890 =

1 answer:

3 0

Konichiwa~! My name is Zalgo and I am here to help you out today. The number that you have provided us (0.026890) in Scientific Notation form is "2.6890 × 10^-2".

I hope that this helps! :D

"Stay Brainly and stay proud!" - Zalgo

(By the way, can you mark me as Brainliest? I'd greatly appreciate it! Arigato~! X3)

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What most likely happens during this reaction

Bad White [126]

Answer:

I think that it is A I am sorry if I am wrong

Explanation:

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2 years ago

Is aluminum foil an element, compound or mixture

lora16 [44]

It is an element. Aluminun foil is aluminum prepared in thin leaves.

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3 years ago

Read 2 more answers

Estradiol is a female sexual hormone that causes maturation and maintenance of the female reproductive system. Elemental analysi

Ipatiy [6.2K]

Answer:

The molecular formula of estradiol is: $C_{18}H_{24}O_2$ .

Explanation:

Molar mass of of estradiol = M= 272.37 g/mol

Let the molecular formula of estradiol be $C_xH_yO_z$

Percentage of an element in a compound:

$\frac{\text{Number of atoms of element}\times \text{Atomic mass of element}}{\text{molecular mass of element}}\times 100$

Percentage of carbon in estradiol :

$\frac{x\times 12 g/mol}{272.37 g/mol}\times 100=79.37\%$

x = 18.0

Percentage of hydrogen in estradiol :

$\frac{y\times 1g/mol}{272.37 g/mol}\times 100=8.88\%$

y = 24.2 ≈ 24

Percentage of oxygen in estradiol :

$\frac{z\times 16 g/mol}{272.37 g/mol}\times 100=11.75\%$

z = 2

The molecular formula of estradiol is: $C_xH_yO_z:C_{18}H_{24}O_2$

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2 years ago

How many grams in 82 moles of CO2

Tems11 [23]

44.0 g/mol

hope it helps

6 0

3 years ago

Give two different conditions under which long chain hydrocarbons may be cracked.

sammy [17]

In thermal cracking, high temperatures (typically in the range of 450°C to 750°C) and pressures (up to about 70 atmospheres) are used to break the large hydrocarbons into smaller ones. Thermal cracking gives mixtures of products containing high proportions of hydrocarbons with double bonds - alkenes.

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2 years ago