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Brums [2.3K]
4 years ago
10

The diameter of carbon atom is 0.000000000 154m. What is the number expressed in scientific notation

Chemistry
2 answers:
kogti [31]4 years ago
7 0
1.54×10 −10

one and fifty four-hundreths times ten to the power of negitiive 10
Drupady [299]4 years ago
7 0

Answer:

1.54 × 10⁻¹⁰ m

Explanation:

A number in scientific notation has the form A × 10ⁿ.

A is a number from 1 to 10, but not 10 itself and is called the <em>coefficient</em>.

n is an integer and is called the <em>exponent</em>.

To convert a small decimal number to exponential notation, you move the decimal point to the right until you have one nonzero digit in front of the decimal point.

The exponent is negative of the number of places you moved the decimal point.  

To convert 0.000 000 000 154 m to scientific notation:

  • Move the decimal point to the right until it is just past the 1. The coefficient is 1.54
  • Count the number of places you have moved the decimal (ten). The exponent is -10.

The number in scientific notation is 1.50 × 10⁻¹⁰.

Add the units and the <em>measurement</em> is 1.50 × 10⁻¹⁰ m.

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Read 2 more answers
Acetic acid (CH3COOH) is formed from its elements by the following reaction equation:
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Answer:

111 L

Explanation:

Calculation of moles of hydrogen gas:-

Mass of H_2 = 18.6 g

Molar mass of H_2 = 2.01588 g/mol

Moles=\frac{Mass}{Molar\ mass}=\frac{18.6}{2.01588}\ mol=9.23\ mol

According to the given reaction:-

2C+2H_2+O_2\rightarrow CH_3COOH

2 moles of hydrogen gas on reaction produces one mole of acetic acid gas.

So,

1 mole of hydrogen gas on reaction produces \frac{1}{2} mole of acetic acid gas.

Also,

9.23 mole of hydrogen gas on reaction produces \frac{1}{2}\times 9.23 mole of acetic acid gas.

Moles of acetic acid gas = 4.615 moles

Given that:

Temperature = 35 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T = (35 + 273.15) K = 308.15 K  

n = 4.615 moles

P = 1.05 atm

V = ?

Using ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 0.0821 L atm/ K mol  

Applying the equation as:

1.05 atm × V = 4.615 moles ×0.0821 L atm/ K mol  × 308.15 K  

<u>⇒V = 111 L</u>

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4 years ago
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