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3 years ago

A stable atom that has a large nucleus most likely contains

Chemistry

2 answers:

Gre4nikov [31]3 years ago

7 0

Most atoms have more neutrons than protons which accounts for basically half of the nucleuses mass.

Zina [86]3 years ago

3 0

Answer: Option (a) is the correct answer.

Explanation:

For an atom to be stable in nature, it is required that the atom must have more number of neutrons as compared to protons.

But if the atom has more number of protons then due like positive charge more repulsion will occur inside the nucleus and therefore, the atom will become unstable. This is because then electrostatic force of repulsion will be greater than the nuclear binding force.

Thus, we can conclude that a stable atom that has a large nucleus most likely contains more neutrons than protons.

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When 1.14 g of octane (molar mass = 114 g/mol) reacts with excess oxygen in a constant volume calorimeter, the temperature of th

maxonik [38]

I can't answer this question without knowing what the specific heat capacity of the calorimeter is. Luckily, I found a similar problem from another website which is shown in the attached picture.

Q = nCpΔT
Q = (1.14 g)(1 mol/114 g)(6.97 kJ/kmol·°C)(10°C)(1000 mol/1 kmol)
<em>Q = +6970 kJ</em>

8 0

3 years ago

If you have a 4.6 L of gas in a piston at a pressure of 1.2 atm and compress 2p the gas until its volume is 2.6 L, what will the

Nesterboy [21]

Answer:

2.12atm

Explanation:

Boyle's Law: P1V1 = P2V2

Manipulate to solve for unknown: P2 = P1V1/V2

Substitute values: P2=(1.2atm)(4.6L)/2.6L

P2 = 2.1230769atm

Round to 3 sig figs to get 2.12atm

3 0

3 years ago

An element has 3 electrons, 3 protons and 4 neutrons. What will be its atomic number and mass number? (

stiv31 [10]

Answer:

its atomic number will be 3 and it's mass number will be 7. it is lithium

8 0

2 years ago

Scientific explanations

Sergio039 [100]

I think that it's cannot include supernatural explanations, or C.

If i got it wrong sorry

6 0

3 years ago

One method for preparing pure iron from Fe2O3 is by reaction with carbon monoxide.Fe2O3(s)+CO(g)→Fe(s)+CO2(g) How many moles of

larisa [96]

Answer:

The 2292 moles of CO are needed to react completely with 122 Kg of Fe₂O₃.

Explanation:

Given data:

Mass of Fe₂O₃ = 122 Kg ( 122×1000 = 122000 g)

Moles of CO = ?

Solution:

Chemical equation:

Fe₂O₃ + 3CO → 2Fe + 3CO₂

Number of moles of Fe₂O₃:

Number of moles = mass/ molar mass

Number of moles = 122000 g /159.69 g/mol

Number of moles = 764 mol

Now we will compare the moles of Fe₂O₃ with CO.

Fe₂O₃ : CO

1 : 3

764 : 3×764 =2292 mol

The 2292 moles of CO are needed to react completely with 122 Kg of Fe₂O₃.

6 0

3 years ago