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3 years ago

Which of the following pairs of atoms would exhibit ionic bonding?

Chemistry

2 answers:

LekaFEV [45]3 years ago

3 0

Its strontium and oxygen.

Dvinal [7]3 years ago

3 0

The best and most correct answer among the choices provided by your question is the third choice.

Strontium and oxygen is a pair of atoms that would exhibit ionic bonding.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

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How much heat is needed to raise the temperature of 100g of an iron from 25°C to

Black_prince [1.1K]

Answer:

382.5J

Explanation:

Use the formula:

E = mcΔθ or Q = mcΔT

m = 100g

c = 0.45 J/g°C

ΔT or Δθ = 110 - 25 = 85°

Sub in the values:

E = 100 × 0.45 × 85

= 382.5J

5 0

2 years ago

According to the equation below, how many moles of PbO are required to generate 3.88×1023 nitrogen molecules?

saul85 [17]

Answer:

1.935 mole

Explanation:

We'll begin by calculating the number of mole present in 3.88x10^23 molecules of nitrogen(N2). This can be obtained as follow:

From Avogadro's hypothesis, 1 mole of any substance contains 6.02x10^23 molecules. Therefore 1 mole of N2 contains 6.02x10^23 molecules.

Now if 1 mole of N2 contains 6.02x10^23 molecules,

Then Xmol of N2 will contain 3.88x10^23 molecules i.e

Xmol of N2 = (3.88x10^23)/6.02x10^23

Xmol of N2 = 0.645 mole

Now, we can obtain the number of moles of PbO required to generate 3.88x10^23 molecules (i.e 0.645 mole) of N2. This is illustrated below:

The equation for the reaction is given below:

3PbO + 2NH3 → 3Pb + N2 + 3H2O

From the balanced equation above, 3 moles of PbO produced 1 mole of N2.

Therefore, Xmol of PbO will produce 0.645 mole of N2 i.e

Xmol of PbO = 3 x 0.645

Xmol of PbO = 1.935 mole.

From the calculations made above,

1.935 mole of PbO will produce 3.88x10^23 molecules of nitrogen (N2).

8 0

3 years ago

?Where did the mass of the forest trees come from? What happens to that mass when the forest burns?

Gala2k [10]

Answer:

Forests prevent desertification.

Explanation:

5 0

3 years ago

What is the molar mass of Sn(CO3)2?

Free_Kalibri [48]

Answer:

The molar mass and molecular weight of Sn(CO3)2 is 238.728.

Explanation:

7 0

2 years ago

HELP ASAP PLEASE!!!

sveticcg [70]

1. Pure substances cannot be separated into any other kinds of matter, while a mixture is a combination of two or more pure substances.

2. A pure substance has constant physical and chemical properties, while mixtures have varying physical and chemical properties (i.e., boiling point and melting point).

3. A pure substance is pure, while a mixture is impure.

4 0

3 years ago