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Aleonysh [2.5K]
4 years ago
8

Write the following in scientific notation. a) 4,502,000 b) 450 c) 0.000458 d) 0.245

Chemistry
1 answer:
kykrilka [37]4 years ago
5 0

Answer:

a 4.502 × 10 6

b 4.5 × 10 2

c 4.58 × 10 -4

d  2.45 × 10 -1

Explanation:

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(b) What is the pOH of 1.35x10⁻³ M HCl? Is the solution neutral, acidic, or basic?
nika2105 [10]

The pOH scale is similar to the pH scale in that a pOH of 7 is indicative of a neutral solution. A basic solution has a pOH less than 7, while an acidic solution has a pOH of greater than 7

<h3>What is pOH scale?</h3>

Based on the relative concentration of hydrogen and hydroxyl ions, the pH and pOH scales are used primarily in chemistry, biology, and soil science to describe and measure the acidity and basicity of neutral, acidic, and basic solutions in water.

The terms pH and pOH scale are frequently used and crucial for determining the chemical, biological, and soil health by converting the values of hydrogen or hydroxyl ion concentrations or by utilizing pH paper and meters.

The pH scale or chart, which measures the concentration of hydrogen and hydroxyl ions in acidic and alkaline solutions, was initially developed by Sorensen.

To learn more about pOH scale from the given link:

brainly.com/question/16631843

#SPJ4

5 0
2 years ago
Convert 98.7 °F to Celsius<br> Formula for Fahrenheit to Celsius
dmitriy555 [2]

Answer:

\boxed {\tt 37.0555556 \textdegree C}

Explanation:

The formula to convert Fahrenheit to Celsius, use the following formula.

C=(\textdegree F -32)*\frac{5}{9}

We want to convert 98.7 degrees Fahrenheit to Celsius, so we must substitute 98.7 in for degrees Fahrenheit.

C=(98.7 -32)*\frac{5}{9}

Solve inside the parentheses. Subtract 32 from 98.7.

C=(66.7)*\frac{5}{9}

Multiply 66.7 by 5/9.

C=37.0555556

98.7 degrees Fahrenheit is equal to 37.0555556 degrees Celsius

3 0
4 years ago
Read 2 more answers
How many electrons are in an electrically neutral atom of boron? A-3 B-5 C-6 D-8
djverab [1.8K]
The answer would be D-8
4 0
3 years ago
Read 2 more answers
Why are gamma rays not affected by a magnet as they pass over it?
Assoli18 [71]
Gamma is not affected by both fields because it isnt charged. 

Only alpha and beta ray will be affected because they are charged with positive and negative ions respectively.

In otherwords, <span>Gamma rays are high-energy photons of light, which have zero electric charge. So they are not affected by magnetic fields</span>

Here's a chart. .

If that doesnt help tell me :)

7 0
3 years ago
Material of density of 762 kg/m3 occupies a container
konstantin123 [22]

Answer:

The answer is

<h2>0.075 kg</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

density = 762 kg/m³

We must first convert the volume from cm³ to m³

1 \:  {cm}^{3}  = 1 \times  {10}^{ - 6}  {m}^{3}

So 99 cm³ will be

9.9 \times  {10 }^{ - 5}  \:  \:  {m}^{3}

So the mass of the material is

mass = 762 \times 9.9 \times  {10}^{ - 5}  \\  = 0.075438

We have the final answer as

<h3>0.075 kg</h3>

Hope this helps you

4 0
4 years ago
Read 2 more answers
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