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NNADVOKAT [17]
3 years ago
12

The highest amount of oxygen will be found in soils containing large amounts of _____. The highest amount of oxygen will be foun

d in soils containing large amounts of _____. gravel silt sand clay
Chemistry
1 answer:
ANEK [815]3 years ago
4 0

Answer:

Gravel. It has high proportion of oxygen

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Match each term with the appropriate definition.
maks197457 [2]

Answer:

Explanation:

1. Force between two charged ions: Electrical force

Electrical force of attraction exists between two charged ions due to constant flow of electrons occuring within their field of influence.

2. Ion made of two or more atoms of  different elements : Polyatomic ion

A polyatomic ion is made up of two or more different elements. Most radicals forms polyatomic ion e.g SO₄²⁻

3. Compound whose atoms form bonds  by transferring electrons : Ionic compound

Ionic compounds forms by the transfer of electrons from a less electronegativbe atom to a more electronegative one. This is in a bid for the atoms to achieve stability.

4. Smooth solid formed by repeating  patterns of ions, atoms, or molecules

: Crystal

A crystal is a unit of an atom which is made up of definite repeating patterns over a long range.

5. Chemical bond formed when electrons  are transferred: Ionic bonds

The bonds resulting from the transfer of electrons between two atoms is an ionic bond. An example is that between Na⁺ ions and Cl⁻ ioin in NaCl

6 0
2 years ago
Identify the limiting reactant in the reaction of nitrogen and hydrogen to form NH3 if 5.23 g of N2 and 5.52 g of H2 are combine
Marrrta [24]

Answer:

1) The limiting reactant is N₂ because it is present with the lower no. of moles than H₂.

2) The amount (in grams) of excess reactant H₂ = 4.39 g.

Explanation:

  • Firstly, we should write the balanced equation of the reaction:

<em>N₂ + 3H₂ → 2NH₃.</em>

<em>1) To determine the limiting reactant of the reaction:</em>

  • From the stichiometry of the balanced equation, 1.0 mole of N₂ reacts with 3.0 moles of H₂ to produce 2.0 moles of NH₃.
  • This means that <em>N₂ reacts with H₂ with a ratio of (1:3).</em>
  • We need to calculate the no. of moles (n) of N₂ (5.23 g) and H₂ (5.52 g) using the relation:<em> n = mass / molar mass.</em>

The no. of moles of N₂ in (5.23 g) = mass / molar mass = (5.23 g) / (28.00 g/mol) = 0.1868 mol.

The no. of moles of H₂ (5.52 g) = mass / molar mass = (5.52 g) / (2.015 g/mol) = 2.74 mol.

  • From the stichiometry, N₂ reacts with H₂ with a ratio of (1:3).

The ratio of the reactants of N₂ (5.23 g, 0.1868 mol) to H₂ (5.52 g, 2.74 mol) is (1:14.67).

∴ The limiting reactant is N₂ because it is present with the lower no. of moles than H₂.

0.1868 mol of N₂ react completely with 0.5604 mol of H₂ and the remaining of H₂ is in excess.

<em>2) To determine the amount (in grams) of excess reactant of the reaction:</em>

  • As showed in the part 1, The limiting reactant is N₂ because it is present with the lower no. of moles than H₂.
  • Also, 0.1868 mol of N₂ react completely with 0.5604 mol of H₂ and the remaining of H₂ is in excess.
  • The no. of moles are in excess of H₂ = 2.74 mol - 0.5604 mol (reacted with N₂) = 2.1796 mol.
  • ∴ The amount (in grams) of excess reactant H₂ = n (excess moles) x molar mass = (2.1796 mol)((2.015 g/mol) = 4.39 g.

4 0
2 years ago
Calculate the heat change in calories for melting 65 g of ice at 0 ∘c.
Genrish500 [490]

When ice melts, the physicals state changes from solid to liquid. The energy or the heat required (q) required to change a unit mass (m) of a substance from solid to liquid is known as the enthalpy or heat of fusion (ΔHf). The variables; q, m and ΔHf are related as:

q = m * ΔHf

the mass of ice m = 65 g

the heat of fusion of water at 0C = ΔHf = 334 J/g

Therefore: q = 65 g * 334 J/g = 21710 J

Now:

4.184 J = 1 cal

which implies that: 21710 J = 1 cal * 21710 J/4.184 J = 5188.8 cal

Hence the heat required is 5188.8 cal or 5.2 Kcal (approx)

5 0
3 years ago
I am not Neon, but I am a noble gas with a mass of less than 30.
Setler [38]

I believe your answer would be helium friend :)

8 0
3 years ago
Read 2 more answers
What subatomic particles make up the nucleus of an atom (select ALL that are in the nucleus)
Ilia_Sergeevich [38]
3 and 4 i would think
3 0
3 years ago
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