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monitta
3 years ago
9

(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

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KIM [24]
D. The particles are tightly packed together
5 0
3 years ago
Read 2 more answers
In carbon dioxide (CO2), how many grams of oxygen (O) would there be if there are 24 grams of carbon (C)?
Zarrin [17]

Answer:

64g of Oxygen

Explanation:

Firstly, carbon and oxygen react to form CO2 as follows;

C + O2 => CO2

According to the equation, one mole of C reacts with one mole of O2 to give one mole of CO2

Since molar mass of C= 12g/mol, O= 16g/mol

One mole of (C) contains 12g

One mole of O2 contains 16(2) = 32g

Hence, If there are 24g of C, there would be 24 × 32 / 12

= 768/12

= 64g

Hence, there would be 64g of oxygen if there are 24g of Carbon

6 0
4 years ago
A solution of salt water is boiled. The water evaporates and solid salt remains. Which statement is true?
Scorpion4ik [409]
C because neither the water or salt have changed their molecular structure. H2O is still H2O and NaCl is still NaCl.
4 0
4 years ago
What is the wavelength of a wave having a frequency of 1.75*10^ 14 s^ -1 ?
Eduardwww [97]

Answer:

wavelength  = 1.71× 10⁻⁶ m

Explanation:

Given data:

Wavelength of wave = ?

Frequency of wave = 1.75×10¹⁴ s⁻¹

Solution:

Formula:

Speed of light = wavelength × frequency

wavelength  = Speed of light / frequency

Now we will put the values in formula.

wavelength  =  3 × 10⁸ m/s / 1.75×10¹⁴ s⁻¹

wavelength  = 1.71× 10⁻⁶ m

6 0
3 years ago
PLS I REALLY NEED HELP DUE FODAY
Gekata [30.6K]

<u>Answer:</u> The equilibrium constant for the reaction is 54.47

<u>Explanation:</u>

The equilibrium constant is defined as the ratio of the concentration of products to the concentration of reactants raised to the power of the stoichiometric coefficient of each. It is represented by the term K_{eq}

The given chemical equation follows:

H_2+I_2\rightleftharpoons 2HI

The expression for equilibrium constant will be:

K_{eq}=\frac{[HI]^2}{[H_2][I_2]}

We are given:

[HI]_{eq}=1.3544\times 10^{-2}M

[H_2]_{eq}=4.5647\times 10^{-3}M

[I_2]_{eq}=7.378\times 10^{-4}M

Putting values in above expression, we get:

K_{eq}=\frac{(1.3544\times 10^{-2})^2}{(4.5647\times 10^{-3})(7.378\times 10^{-4})}\\\\K_{eq}=54.47

Hence, the equilibrium constant for the reaction is 54.47

3 0
3 years ago
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