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2 years ago

14

What types of atoms typically form covalent bonds? (4 points)

1 answer:

Yakvenalex [24]2 years ago

6 0

Answer: Ionic bonds usually occur between metal and nonmetal ions. For example, sodium (Na), a metal, and chloride (Cl), a nonmetal, form an ionic bond to make NaCl. In a covalent bond, the atoms bond by sharing electrons. Covalent bonds usually occur between nonmetals.

Explanation:

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If I add 475mL of water to 75.0mL of a 0.315M NaOH solution, what will the molarity of the diluted solution be?

pantera1 [17]

Answer is: <span>the molarity of the diluted solution 0,043 M.
</span>V(NaOH) = 75 mL ÷ 1000 mL/L = 0,075 L.
c(NaOH) = 0,315 M = 0,315 mol/L.
n(NaOH) = c(NaOH) · V(NaOH).
n(NaOH) = 0,075 L · 0,315 mol/L.
n(NaOH) = 0,023625 mol.
V(solution) = 0,475 L + 0,75 L.
c(solution) = 0,023625 mol ÷ 0,550 L.
c(solution) = 0,043 mol/L.

5 0

3 years ago

The mass of a single tungsten atom is 3.05x10-22 grams. How many tungsten atoms would there be in 135 milligrams of tungsten?

levacccp [35]

135 mg of tungsten contains 4.43 × 10²⁰ atoms of tungsten (3.05 × 10⁻²² g/atom).

First, we will convert 135 mg to grams using the conversion factor 1 g = 1000 mg.

$135 mg \times \frac{1g}{1000mg} = 0.135 g$

The mass of a single tungsten atom is 3.05 × 10⁻²² g. The number of atoms in 0.135 g of tungsten is:

$0.135 g \times \frac{1atom}{3.05 \times 10^{-22}g } = 4.43 \times 10^{20}atom$

135 mg of tungsten contains 4.43 × 10²⁰ atoms of tungsten (3.05 × 10⁻²² g/atom).

You can learn more about unit conversion here: brainly.com/question/19420601

8 0

2 years ago

A chemical reaction in which two or more substances undergo a chemical union to form a more complex substance is a ______ reacti

Sloan [31]

Answer:

a

Explanation:

A) Combination

7 0

2 years ago

Read 2 more answers

Why isn’t the Alfa Carbon in Glycine considered chiral ?

Elanso [62]

It isn’t because they eat p o o

8 0

2 years ago

Cl−(aq)+NO−3(aq) → NO(g)+Cl2(g) Express your answer as a chemical equation. Identify all of the phases in your answer.

gulaghasi [49]

Answer : The balanced redox reaction will be,

$6Cl^-(aq)+2NO_3^-(aq)+8H^+(aq)\rightarrow 2NO(g)+3Cl_2(g)+4H_2O(l)$

Explanation :

The given chemical equation is,

$Cl^-(aq)+NO_3^-(aq)\rightarrow NO(g)+Cl_2(g)$

In the half reaction method, the number of atoms in each half reaction and number of electrons must be balanced.

The half reactions in the acidic medium are :

Reduction : $NO_3^-(aq)+4H^+(aq)+3e^-\rightarrow NO(g)+2H_2O(l)$ ......(1)

Oxidation : $2Cl^-(aq)\rightarrow Cl_2(g)+2e^-$ .......(2)

Now multiply the equation (1) by 2 and equation (2) by 3 then added both equation, we get the balanced redox reaction.

Thus, the balanced redox reaction will be,

$6Cl^-(aq)+2NO_3^-(aq)+8H^+(aq)\rightarrow 2NO(g)+3Cl_2(g)+4H_2O(l)$

8 0

2 years ago