All categories

1 year ago

PLEASE HELP ASAP

Chemistry

1 answer:

Mekhanik [1.2K]1 year ago

4 0

The mass of magnesium, which has a density of 1.74 g/cm is 504.6 g.

Mass is the quantity of matter. Mass can be calculated by multiplying density by volume.

Magnesium is a chemical element with the atomic number 12. It is needed in the body in trace amounts. It can cause malnutrition in the body.

Mass = Density x volume

We know the density and the volume of magnesium.

Density = 1.74

Volume = 290

Density x volume

Putting the value in the equation

1.74 x 290 = 504.6 g

Thus, the mass of magnesium is 504.6 g.

To learn more about mass, refer to the below link:

brainly.com/question/22795877

#SPJ1

You might be interested in

What is Peloponnese?

Lisa [10]

Peloponnese: The mountainous southern peninsula of Greece, connected to central Greece by the Isthmus of Corinth. Greek name Pelopónnisos.

8 0

4 years ago

A football field is about 100 m long. If it takes a person 20 seconds to run its length, how fast were they running ?

madam [21]

Hi Alex, thanks for asking a question here on Brainly!

We can figure how the fast the person is running by dividing the minutes by the seconds.

$\frac{5m}{sec}$
= $\frac{300m}{min}$
= $\frac{18km}{hr}$

The person was running 18 km/hr. ✅

Hope that helps! ★ If you have further questions about this question or need more help, feel free to comment below or post another question and send the link to me. -UnicornFudge aka Nadia.

3 0

4 years ago

A pressure cooker contains 5.68 liters of air at a temperature of 394 K. If the absolute pressure of the air in the pressure coo

Arturiano [62]

Answer:

Explanation:

We shall find out volume of air at NTP or at 273 K and 10⁵ Pa ( 1 atm )

Let it be V₂

$\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}$

$\frac{2\times 10^5\times 5.68}{394} =\frac{10^5\times V_2}{273}$

V₂ = 7.87 litres

22.4 litres of any gas is equivalent to 1 mole

7.87 litres of air will be equivalent to

7.87 / 22.4 moles

= .35 moles .

7 0

3 years ago

If the Moon rises at 7 P.M. on a particular day, then approximately what time will it rise six days later?

OLga [1]

Answer:

below

Explanation:

28th 10;24 am

5 0

3 years ago

How many molecules of CO2 are equivalent to 112g CO2 scientific figures

Marrrta [24]

Answer:

N(CO2) = n(CO2) x Avogadros constant

n(CO2) = mass(CO2)/Molar mass(CO2) = 112/44 = 2.5454….

N(CO2) = 2.545454… x (6.02 x 10^23) = 1.5323636 x 10^24

Therefore, the number of CO2 molecules in 112 g of CO2 = 1.53 x 10^24 molecules

6 0

3 years ago

Read 2 more answers