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3 years ago

9

Which type of force occurs between two objects at a distance?

1 answer:

agasfer [191]3 years ago

5 0

Answer:

Gravitational force of attraction.

Explanation:

When two bodies of masses 'm' and 'M' are separated by a distance 'r', then both the bodies experience a force of attraction towards each other. This force of attraction is called gravitational force. It is a weak force but it always act between two bodies that have mass.

The magnitude of the gravitational force is directly proportional to product of the masses and inversely proportional to the square of the distance between the masses.

This means that as the distance between the bodies is increases, the gravitational force between the bodies decreases and vice versa.

The gravitational force of attraction is given as:

$F_g=\frac{GmM}{r^2}\\\\G\to \textrm{Universal Gravitational constant}$

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Ferrophosphorus (Fe2P) reacts with pyrite (FeS2) producing iron(II) sulfide and a compound that is 27.87% P and 72.13% S by mass

k0ka [10]

Answer:

The molecular formula of the compound = $P_4S_{10}$

The empirical formula of the compound = $P_2S_{5}$

The balanced chemical equation for this reaction:

$4Fe_2P+18FeS_2\rightarrow 26FeS+P_4S_{10}$

Explanation:

Compound that is 27.87% P and 72.13% S by mass and has a molar mass of 444.56 g/mol.

Molar mass of compound = 444.56 g/mol

Number of phosphorus atom = x

Number of sulfur atom = y

Atomic mass of phosphorus 31 g/mol

Atomic mass of sulfur = 32 g/mol

Percentage of element in compound :

$=\frac{\text{number of atoms}\times text{Atomic mass}}{\text{molar mas of compound}}\times 100$

Phosphorus :

$27.87\%=\frac{x\times 31 g/mol}{444.56 g/mol}\times 100$

x = 4

Sulfur :

$72.13\%=\frac{y\times 32 g/mol}{444.56 g/mol}\times 100$

y = 10

The molecular formula of the compound = $P_4S_{10}$

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

The empirical formula of the compound = $P_2S_{5}$

The balanced chemical equation for this reaction:

$4Fe_2P+18FeS_2\rightarrow 26FeS+P_4S_{10}$

8 0

4 years ago

Why rusting of iron is harmful

gladu [14]

It is harmful because you can get burned easy and your clothes can get dirty.

3 0

3 years ago

OMG PLEASE HELP. WILL MARK U BRAINLIEST IF YOU ANSWER ALL 3 QUESTIONS. THANKS SO MUCH.

Readme [11.4K]

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4 0

3 years ago

How many moles are present in 454 grams of co2?

babunello [35]

Moles=mass/Mr
mass=454
Mr=12+16+16=44
So,454/44=10.31mol
Answer is:10.31mol

3 0

3 years ago

Read 2 more answers

WILL MARK BRAINLIEST!!!! please help quickly. 1. Combine iron and copper (II) sulfate solution. (Hint: Iron will form the iron (

Black_prince [1.1K]

Answer:

Fe + CuSO4 → Cu + Fe2(SO4)

2. Combine lead (II) nitrate and potassium iodide solutions.

Pb(NO3)2+ Kl → KNO3 + PbI2

3. Combine magnesium metal and hydrochloric acid solution.

Mg + HCl → MgCl 2(aq) + H 2(g)

4. Electrolysis (splitting) of water.

H2O → Im not sure sorry

5. Burning magnesium.

Mg + O2 → MgO

Explanation:

7 0

3 years ago