All categories

3 years ago

HELP IM AB TO CRY

Chemistry

1 answer:

Lemur [1.5K]3 years ago

8 0

Answer:

1.23 × 10³ N

Explanation:

Step 1: Given and required data

Mass of the person (m): 125 kg

Acceleration due to the gravitational force (g): 9.81 m/s²

Step 2: Calculate the force acting between the Earth and a 125-kg person standing on the surface of the Earth

We will use Newton's second law of motion.

F = m × g

F = 125 kg × 9.81 m/s²

F = 1.23 × 10³ N

You might be interested in

If the experiment were repeated using a cuvettes with a path length of 2.0 cm, how would that affect the absorbance values for t

inessss [21]

Answer:

..............................

5 0

3 years ago

What does that number of protons tell you

bogdanovich [222]

The number of protons tells you which element the atom is. The number of protons is the element number (Hydrogen - 1, Helium - 2, etc.).

5 0

3 years ago

A student wants to test if giving dogs a toy to play with makes their tail wag more. He gives dog toys to one group, while anoth

kicyunya [14]

Answer:

Experimental: the dogs who get the toys

Control: the dogs who dont recieve a toy

Explanation:

expermental is the group that recieved the tested variable in this case that being the toy

control is the group that doesn't recieve the tested variable

4 0

3 years ago

Lithium reacts with bromine

ivanzaharov [21]

2Li + Br2 → 2LiBr
Lithium react with bromine to produce lithium bromide. The reaction proceeds at room temperature.
:)

6 0

3 years ago

How much CO2 is produced from the combustion of a tank of propane C3H8? Assume the tank contains 9kgs of propane and the molecul

Zinaida [17]

<u>Answer:</u> The mass of carbon dioxide produced is 26.9 kg

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

Given mass of propane = 9 kg = 9000 g (Conversion factor: 1 kg = 1000 g)

Molar mass of propane = 44.1 g/mol

Putting values in equation 1, we get:

$\text{Moles of propane}=\frac{9000g}{44.1g/mol}=204.08mol$

The chemical equation for the combustion of propane follows:

$C_3H_8+5O_2\rightarrow 3CO2+4H_2O$

By Stoichiometry of the reaction:

1 mole of propane produces 3 moles of carbon dioxide.

So, 204.08 moles of propane will produce = $\frac{3}{1}\times 204.08=612.24mol$ of carbon dioxide.

Now, calculating the mass of carbon dioxide by using equation 1, we get:

Molar mass of carbon dioxide = 44.01 g/mol

Moles of carbon dioxide = 612.24 moles

Putting values in equation 1, we get:

$612.24mol=\frac{\text{Mass of carbon dioxide}}{44.01g/mol}\\\\\text{Mass of carbon dioxide}=(612.24mol\times 44.01g/mol)=26944.7g=26.9kg$

Hence, the mass of carbon dioxide produced is 26.9 kg

3 0

3 years ago