All categories

3 years ago

Which statements describes Newton's law of universal gravitation ?

Chemistry

2 answers:

IrinaK [193]3 years ago

8 0

Your answer is D. You're Welcome

Pepsi [2]3 years ago

5 0

Answer:

D. Every object in the universe attracts every other object

Explanation:

Newton's law of universal gravitation tells us that the pull that bodies have is inversely proportional to the distance of separation and directly proportional to the product of their masses. This attraction exists between every body in the universe.

You might be interested in

What conditions make G always positive?

Bess [88]

The answer is c ......

8 0

3 years ago

Read 2 more answers

The mechanical advantage of a door knob that allows you to move a boli

taurus [48]

Answer:

the mechanical advantage is 50 because 0.50/0.01=50

8 0

4 years ago

U peus

mote1985 [20]

Gases

Explanation:

Gases are the highly compressible states of matter made up of tiny particles that are moving independently of one another and are present in large quantities on the earth surface.

There are three states of matter which are solid, liquid and gas.

The particles of a gas are very far apart and are held together by very weak attractive forces.
In a gas, the molecules are in continuous, random, straight -line motion
They are easily compressible due to the weak attraction between them.

Learn more:

State of matter brainly.com/question/10972073

#learnwithBrainly

7 0

3 years ago

How many molecules are there in 1024 grams of Na2SO4?

tino4ka555 [31]

Answer:

1.91 x 450 molecules

Explanation:

4 0

3 years ago

Considering that the mantle is 44.8% oxygen and 21.5% silicon by mass, calculate the mole ratio of oxygen atoms to silicon atoms

horrorfan [7]

The mantle has a mass of around $4.278 X 10 ^2^4 kg$ that is around 68.4% of earth's mass.

So to calculate moles we need to first find out the mass of oxygen and silicon present in mantle. It is given that oxygen is 44.8% by mass in mantle and 21.5% by mass in mantle, therefore to calculate its mass, we need to use $\text{mass percentage }=\frac{\text{mole of solute}}{\text{mass of solution}}\times100$

Now, to calculate mass percentage of oxygen

$44.8 =\frac{x}{4.278X10^2^4kg}\times100$

$x= 191.65\times10^2^2kg$

Similarly the mass of silicon can be calculated

$21.5 =\frac{x}{4.278X10^2^4kg}\times100$

$x=91.977\times10^2^2kg$

Now, the moles of any substance is calculated by

$\text{moles}= \frac{\text{given mass}}{\text{molar mass}}$

$\text{moles of oxygen}= \frac{191.65\times10^2^2kg}{2.6566962\times10^-^2^6kg}$

where, mass of oxygen in kilograms is $2.6566962\times10^-^2^6kg$

So, $\text{moles of oxygen}=72.1384\times10^4^8\text{moles of O}$

Similarly $\text{moles of silicon}= \frac{91.977\times10^2^2kg}{4.663\times10^-^2^6kg}$

$\text{moles of silicon}=19.724\times10^4^8\text{moles of Si}$

Now, to calculate mole ratio we need to divide every moles to the lowest calculated mole that is the moles of Si and round it off to the nearest whole number.

$\text{mole ratio of oxygen}= \frac{72.138\times10^4^8kg}{19.724\times10^4^8kg}$

$=3.65\approx 4$

$\text{mole ratio of Silicon}=\frac{19.724\times10^4^8}{19.724\times10^4^8}$

$=1$

$\text{Mole ratio of Oxygen : Mole ratio of Silicon} = 4:1$

6 0

4 years ago

Read 2 more answers