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2 years ago

An ionic bond is formed when.....

Chemistry

2 answers:

mixas84 [53]2 years ago

8 0

An ionic bond is formed when a compound loses or gains an electron

Papessa [141]2 years ago

7 0

Answer:

When atom loses a electron

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Calculate the molarity of a 10.0% (by mass) aqueous solution of hydrochloric acid.

olga2289 [7]

The question is incomplete,the complete question :

Calculate the molality of a 10.0% (by mass) aqueous solution of hydrochloric acid:

a) 0.274 m

b) 2.74 m

c) 3.05 m

d) 4.33 m

e) the density of the solution is needed to solve the problem

Answer:

The molality of a 10.0% (by mass) aqueous solution of hydrochloric acid is 3.05 mol/kg.

Explanation:

10.0% (by mass) aqueous solution of hydrochloric acid.

10 grams of HCl is present in 100 g of solution.

Mass of HCl = 10 g

Mass of solution = 100 g

Mass of solution = Mass of solute + Mass of water

Mass of water = 100 g - 10 g = 90 g

Moles of HCl = $\frac{10 g}{36.5 g/mol}=0.2740 mol$

Mass of water in kilograms = 0.090 kg

Molality = $\frac{0.2740 mol}{0.090 kg}=3.05 mol/kg$

The molality of a 10.0% (by mass) aqueous solution of hydrochloric acid is 3.05 mol/kg.

6 0

2 years ago

Think about a stalk of corn. You can see it has roots, a stalk, and leaves. You know it reproduces with pollen from the tassels

Shkiper50 [21]

Answer:

The cells of which the corn plant is made up of are eukaryotic cells.

EXPLANATION:

They have all the features such as nucleus and organelles such mitochondria and an endoplasmic reticulum. More primitive forms of life such as bacteria are prokaryotes and lack these things except they do have ribosomes like eukatyotes. Genetic information is processed differently in prokaryotes and eukaryotes but that is another question altogether.;)

5 0

2 years ago

During the electrolysis of cryolite ,aluminium and fluorine are formed in.......molar ratio

PtichkaEL [24]

${\huge{\boxed{\sf{\pink{☛Answer࿐}}}}}$

From the first mechanism, it can be seen that the Aluminum is reduced at cathode and Florine is oxidized at anode.

The ratio of aluminium and fluorine is the ratio of their change in oxidation number, i.e. 2:3

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8 0

2 years ago

Describe two techniques used to measure the PH of a solution

natali 33 [55]

Answer:

ph paper, or a ph meter

Explanation:

8 0

2 years ago

Read 2 more answers

PLEASE HELP ME!! DIMENSIONAL ANALYSIS CHEMISTRY DUE IN 5 MINS!!!

Eddi Din [679]

Answer:

12 mi/h

Explanation:

Step 1: Given data

Total distance (d): 6 km

Time elapsed (t): 19 min

Step 2: Convert "d" to miles

We will use the conversion factor 1 mi = 1.60934 km.

6 km × 1 mi/1.60934 km = 3.7 mi

Step 3: Convert "t" to hours

We will use the conversion factor 1 h = 60 min.

19 min × 1 h/60 min = 0.32 h

Step 4: Calculate the average speed of the runner (s)

The speed is equal to the quotient between the total distance and the time elapsed.

s = d/t

s = 3.7 mi/0.32 h = 12 mi/h

6 0

2 years ago