All categories

3 years ago

In the equation F= M x A, what are the three variables? (choose 3) A Friction B Mass C Momentum D Force E Acceleration

Chemistry

1 answer:

joja [24]3 years ago

5 0

Answer:

B Mass

D Force

E Acceleration

Explanation:

We know that

Force = mass × acceleration

F = m × a

The unit of force is newtons

The unit of mass is kg and

the unit of acceleration is $ms^{-2}$

Force and acceleration are vector quantities and mass is a scalar quantity.

Newton's 2nd law of motion states that acceleration is directly proportional to net force and inversely proportional to mass.

he result is the equation

∑ $F = ma$

You might be interested in

What heat does to molecules and why

BARSIC [14]

Answer:

When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.

Explanation:

7 0

3 years ago

The activation energy for the reaction NO2 (g )+ CO (g) ⟶ NO (g) + CO2 (g) is Ea = 218 kJ/mol and the change in enthalpy for the

madreJ [45]

Answer:

$470\frac{KJ}{mol}$

Explanation:

The activation energy represents the energy barrier that reagents must pass to transform into products (or products to transform into reagents in a reverse reaction)

For any reaction, the change in enthalpy is related to the activation energy by the equation

$\Delta H =E_{a\ direct}-E_{a\ reverse}$

So, the activation energy for the reverse reaction is

$E_{a\ reverse}=E_{a\ direct}-\Delta H =218 \frac{KJ}{mol} - (-252)\frac{KJ}{mol}=470\frac{KJ}{mol}$

4 0

3 years ago

A 10.00 g sample of a compound containing only carbon, hydrogen, and oxygen forms 23.98 g CO2 and 4.91 g H2O upon complete combu

yanalaym [24]

We can determine the empirical formula by first converting each of the grams to moles. remember to do this, first, we need the molar mass of the molecules which can be calculated by adding the mass of the atoms from the periodic table.

molar mass of CO2= 44.0 g/mol
molar mass of H2O= 18.02 g/mol

now, lets determine the grams of each atom

Carbon: 23.98 g x (12.011 g / 44.01 g) = 6.54 g C

Hydrogen: 4.91 g x (2.0158 g / 18.02 g) = 0.55 g H

Oxygen: 10.0 - (6.54 + 0.55) = 2.91 g O

Now let's convert each mass to moles.

C: 6.54 g / 12.01 g / mol = 0.54 mol
H: 0.55 g / 1.01 g/mol = 0.54 mol
O: 2.91 g / 16.00 g/mol = 0.18 mol

now that we have the moles of each atom, we need to divide them by the smallest value to find the ration. If you do not get the whole number, you need to multiply until to get a whole number.

C: 0.54 mol / 0.18 mol = 3
H: 0.54 mol / 0.18 mol = 3
O: 0.18 mol / 0.18 mol = 1

empirical formula--> C₃H₃O

4 0

4 years ago

An aluminum engine block has a volume of 4.77 L and a mass of 12.88 kg. what is the density of the aluminum in grams per cubic c

Whitepunk [10]

12.88 x 1000 = 12,880 g

4.77 x 1000 = 4770 cm³

D = mass / volume

D = 12,880 / 4770

D = 2.70 g/cm³

hope this helps!

6 0

4 years ago

Which two systems had the most direct impact of her ability to move run the bases

Amanda [17]

The two systems would be respiratory and circulatory i think not completely sure tho

7 0

3 years ago