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2 years ago

A 3 kg soccer ball was kicked with a force of 15 Newtons. What was its acceleration

Chemistry

1 answer:

Gennadij [26K]2 years ago

7 0

<h3>Answer:</h3>

5 m/s²

<h3>Explanation:</h3>

From the question, we are given;

Mass is 3 kg
Force is 15 N

We are supposed to calculate the acceleration;

To calculate the acceleration we will use the second Newton's law of motion;

According to Newton's second law of motion, the resultant force is directly proportional to the product of force and mass.

That is, F = ma

In this case;

To get acceleration we rearrange the formula;

a = F ÷ m

= 15 N ÷ 3 kg

= 5 m/s²

Therefore, the acceleration of the ball is 5 m/s²

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A sealed vessel contains 0.200 mol of oxygen gas, 0.100 mol of nitrogen gas, and 0.200 mol of argon gas. The total pressure of t

babunello [35]

Answer:

Explanation:

We can use the mole ratio to calculate the partial pressure. The total number of moles is 0.2 + 0.2 + 0.1 = 0.5 moles

Now, we know that the mole fraction of the argon gas would be 0.2/0.5

The partial pressure is as follows. To calculate this, we simple multiply the number of moles by the total pressure.

0.2/0.5 * 5 = 1.0/0.5 = 2.00atm

8 0

2 years ago

Imagine that a new polyatomic anion called "platoate" is invented. What would an acid of "platoate" be named?

o-na [289]

<h3>Answer:</h3>

Platoic Acid

<h3>Explanation:</h3>

While naming Carboxylic Acids we know that when the Carboxylic Acid looses proton it is converted into corresponding conjugate base called as Carboxylate.

Examples:

HCOOH → HCOO⁻ + H⁺

Formic acid Formate Ion

H₃CCOOH → H₃CCOO⁻ + H⁺

Acetic acid Acetate Ion

H₅C₂COOH → H₅C₂COO⁻ + H⁺

Propanoic acid Propanoate Ion

Therefore, if the conjugate base is Platoate then the corresponding acid will be Platoic Acid means we will replace the -ate by -ic acid <em>i.e.</em>

RCOO⁻ + H⁺ → RCOOH

Platoate Ion Platoic Acid

8 0

2 years ago

Read 2 more answers

A 24.00 g sample contains 14.60 g Cl and 9.400 g B. What is the percent composition (by mass) of boron in this sample?

vaieri [72.5K]

Answer:

39.2 %

Explanation:

The following data were obtained from the question:

Mass of sample = 24 g

Mass of Cl = 14.6 g

Mass of B = 9.4 g

Percentage composition of boron =?

The percentage composition (by mass) of boron in the sample can be obtained as illustrated below:

Percentage composition of boron = mass of B /mass of sample × 100

Percentage composition of boron = 9.4/24 × 100

Percentage composition of boron = 39.2 %

Therefore, the percentage composition (by mass) of boron in the sample is 39.2 %

8 0

2 years ago

Movement of the ___<br> creates the London dispersion forces.

Tanzania [10]

Answer: electrons

Explanation: moving electrons cause momentarily charge

Distribution on molecule. This distribution induces similar distribution to

Adjacent molecule.

7 0

2 years ago

You have a 16.0-oz. (473-mL) glass of lemonade with a concentration of 2.66 M. The lemonade sits out on your counter for a coupl

salantis [7]

<u>Answer:</u> The new concentration of lemonade is 3.90 M

<u>Explanation:</u>

To calculate the number of moles for given molarity, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in mL)}}$ .....(1)

Molarity of lemonade solution = 2.66 M

Volume of solution = 473 mL

Putting values in equation 1, we get:

$2.66M=\frac{\text{Moles of lemonade}\times 1000}{473}\\\\\text{Moles of lemonade}=\frac{2.66\times 473}{1000}=1.26mol$

Now, calculating the new concentration of lemonade by using equation 1:

Moles of lemonade = 1.26 moles

Volume of solution = (473 - 150) mL = 323 mL

Putting values in equation 1, we get:

$\text{New concentration of lemonade}=\frac{1.26\times 1000}{323}\\\\\text{New concentration of lemonade}=3.90M$

Hence, the new concentration of lemonade is 3.90 M

7 0

2 years ago