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egoroff_w [7]
4 years ago
15

The attraction between various combinations of atoms will produce _____ which form molecules. ions bonds isotopes shells

Chemistry
2 answers:
d1i1m1o1n [39]4 years ago
7 0

<u>Answer:</u> The correct answer is bonds.

<u>Explanation:</u>

For the given options:

<u>Option 1:</u>  Ions

Ions are defined as the chemical species which are formed when an atom looses or gains electrons.

When an atom looses its electron, it forms a positive ion known as cation and when an atom gains electron, it forms a negative ion known as anion.

<u>Option 2:</u>  Bonds

Bonds are formed when two atoms combine by the attraction of atoms or by the sharing of electrons between the atoms.

When bond is formed by the attraction of atoms, it forms ionic bond and when sharing of electrons takes place between the atoms, it forms covalent bond.

<u>Option 3:</u>  Isotopes

Isotopes are defined as the chemical species which have same atomic number but differ in mass number.

<u>Option 4:</u>  Shells

Shells are defined as the orbits around the nucleus where electrons are present.

Hence, the correct answer is bonds.

Gemiola [76]4 years ago
4 0
The attraction between various combinations of atoms will produce BONDS..........
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Calculate the enthalpy change, ∆H in kJ, for the reaction H2O(s) → H2(g) + 1/2O2(g). Use the following information: : +279.9 kJ
Delvig [45]

Answer:

+ 291.9 kJ

Solution:

The equation given is as;

H₂O ₍s₎ → H₂ ₍g₎ + 1/2 O₂ ₍g₎ ΔH = ?

First, as we know the heat of formation of H₂O ₍l₎ is,

H₂ ₍g₎ + 1/2 O₂ ₍g₎ → H₂O ₍l₎ ΔH = - 285.9 kJ

Now, reversing the equation will reverse the sign of heat as,

H₂O ₍l₎ → H₂ ₍g₎ + 1/2 O₂ ₍g₎ ΔH = + 285.9 kJ

Also, we know that,

H₂O ₍s₎ → H₂O ₍l) ΔH = + 6.0 kJ

Now, adding last two equations,

H₂O ₍l₎ → H₂ ₍g₎ + 1/2 O₂ ₍g₎ ΔH = + 285.9 kJ

H₂O ₍s₎ → H₂O ₍l) ΔH = + 6.0 kJ

-----------------------------------------------------------------------------

H₂O ₍s₎ → H₂ ₍g₎ + 1/2 O₂ ₍g₎ ΔH = + 291.9 kJ

4 0
3 years ago
The quantitative amount of charge separation in a diatomic molecule contributes to the dipole moment of that molecule. A. True B
SOVA2 [1]

Answer:

The answer is True.

Explanation:

The sentence above is true it all adds up.

8 0
2 years ago
Is a oak tree a invertebrates
viva [34]

Answer:

yes

Explanation:

oak trees don't have vertebrates

7 0
3 years ago
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(d) If you have 9.44 g of NazPO4, how many grams of AgNO, will be needed for complete
AlladinOne [14]

30.6 g of AgNO₃

Explanation:

We have the following chemical reaction:

Na₃PO₄ + 3 AgNO₃ → Ag₃PO₄ +  3 NaNO₃

Now we calculate the number of moles of  Na₃PO₄:

number of moles = mass / molecular weight

number of moles of Na₃PO₄ = 9.44 / 164 = 0.06 moles

Now we formulate the following reasoning:

if        1 mole of Na₃PO₄ will react with 3 moles of AgNO₃

then  0.06 moles of Na₃PO₄ will react with X moles of AgNO₃

X = (0.06 × 3) / 1 = 0.18 moles of AgNO₃

mass = number of moles × molecular weight

mass of AgNO₃ = 0.18 × 170 = 30.6 g

Learn more about:

mole concept

brainly.com/question/1445383

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3 0
3 years ago
Each student in a class placed a 2.00 g sample of a mixture of Cu and Al in a beaker and placed the beaker in a fume hood. The s
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Answer:

Percentage mass of copper in the sample = 32%

Explanation:

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From the equation of reaction, 1 mole of Cu(NO₃) is produced from 1 mole of copper. Therefore, 0.010 moles of Cu(NO₃) will be produced from 0.010 mole of copper.

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mass of copper = number of moles * molar mass

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Percentage by mass of copper in the 2.00 g sample = (0.64/2.00) * 100%

Percentage mass of copper in the sample = 32%

3 0
3 years ago
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