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2 years ago

5. How much force is required to accelerate a 12kg mass at 5m/s??

Chemistry

2 answers:

alisha [4.7K]2 years ago

5 0

Answer:

Therefore the force required to accelerate 12 kg mass at 5 m/s² is 60N

Explanation:

<u><em>How much force is required to accelerate a 12kg mass at 5m/s?</em></u>

Using newton's law of motion;

F = mass × acceleration

mass is given to be 12 kilogram and acceleration is given to be 5 meter per square second.

So we will substitute the value into our equation;

F = mass × acceleration

=12 kg × 5 m/s²

= 60 kg m/s

F = 60 kg m/s²

But kg m/s²= N

The unit for measuring force is N

F = 60 N

Therefore the force required to accelerate 12 kg mass at 5 m/s² is 60N

gregori [183]2 years ago

3 0

Answer:

Force = Mass x Acceleration

12 x 5 = 60

60 Newton’s is your final answer

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2 years ago

What is the mass number of an ion with 107 electrons, 159 neutrons, and a +1 charge? express your answer as an integer?

Darya [45]

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2 years ago

A cube has sides that are 0.03 m . What is the volume of the cube in liters?

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Answer:

0.027 litres

Explanation:

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2 years ago

2. Classify the following solutions as acidic, basic, or neutral at 25OC.

PilotLPTM [1.2K]

Answer: a) pH = 13.00 : basic

b) $[H_3O^+]=1.0\times 10^{-12}$ : basic

c) pOH = 5.00 : basic

d) $[OH^-]=1.0\times 10^{-9}$ : acidic

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

$pH=-\log [H_3O^+]$

Acids have pH ranging from 1 to 6.9 and bases have pH ranging from 7.1 to 14.Neutral substances have pH of 7.

a) pH = 13.00

As pH is more than 7, the solution is basic.

b) $[H_3O^+]=1.0\times 10^{-12}$

Putting in the values:

$pH=-\log[1.0\times 10^{-12}]$

$pH=12$

As pH is more than 7, the solution is basic.

c) pOH = 5.00

$pH+pOH=14.0$

$pH=14.0-5.00=9.00$

As pH is more than 7, the solution is basic.

d) $[OH^-]=1.0\times 10^{-9}$

Putting in the values:

$pOH=-\log[1.0\times 10^{-9}]$

$pOH=9.00$

$pH+pOH=14.0$

$pH=14.0-9.00=5.00$

As pH is less than 7, the solution is acidic.

3 0

2 years ago

6.) 50.0 mol H2O<br> ? molecules

8_murik_8 [283]

<h3>Answer:</h3>

3.01 × 10²⁵ molecules H₂O

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Chemistry</u>

<u>Atomic Structure</u>

Using Dimensional Analysis
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<h3>Explanation:</h3>

<u>Step 1: Define</u>

50.0 mol H₂O

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

<u /> $\displaystyle 50.0 \ mol \ H_2O(\frac{6.022 \cdot 10^{23} \ molecules \ H_2O}{1 \ mol \ H_2O} )$ = 3.011 × 10²⁵ molecules H₂O

<u>Step 4: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules and round.</em>

3.011 × 10²⁵ molecules H₂O ≈ 3.01 × 10²⁵ molecules H₂O

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2 years ago