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nikitadnepr [17]
3 years ago
9

Which formula represents a molecular compound? (1) HI (3) KCl (2) KI (4) LiCl

Chemistry
2 answers:
WARRIOR [948]3 years ago
7 0

Answer:

HI

Explanation:

mamaluj [8]3 years ago
3 0
The answer is (1) HI. H and I are both nonmetals, and remember that a molecular compound is one in which covalent bonds hold atoms together, and covalent bonds typically form between nonmetals. The other three choices represent ionic compounds (metal and nonmetal).
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6. An average Mastiff puppy weighs 2.72 kilograms. How many pounds is an average Mastiff puppy? (1lb = 453.6 g)
Sloan [31]

The number of pounds present in 2.72 kg of Mastiff puppy is 5.996 pounds

<h3>What is weight?</h3>

Weight can be defined as the gravitation pull on a body. or it can also be defined as the product of the mass of a body and its acceleration due to gravity.

<h3>Units of weight</h3>

weight has several units and they include

  1. Newton
  2. pounds
  3. ounces
  4. Tons.

These units can be converted.

From the question,

If

  • 1 lb = 453.6 g

But,

  • 1 kg = 1000 g

Then,

  • 2.72 kg = 2720 g

Therefore,

  • 2.72 kg of Mastiff = (2720/453.6) pounds of average Mastiff = 5.996 pounds

Hence, The number of pounds present in 2.72 kg of Mastiff puppy is 5.996 pounds.

Learn more about weight here: brainly.com/question/2337612

4 0
2 years ago
How does Natural selection lead to the Evolution of bacteria?
BigorU [14]

Answer:

Bacteria can evolve quickly because they reproduce at a fast rate.

Explanation:

Bacteria can evolve quickly because they reproduce at a fast rate. Mutations in the DNA of bacteria can produce new characteristics. A random mutation might cause some bacteria to become resistant to certain antibiotics, such as penicillin.

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2 years ago
Model describe how you would show j.j. thomson's model of the atom using small beads and clay
faltersainse [42]
Make a ball of clay and embed small beads throughout it. The plum pudding model.
5 0
3 years ago
Give two uses of compound under each of the following, in medicine and in industry​
NemiM [27]

Explanation:

#Medicine

Compounds used as medicines are most often organic compounds, which are often divided into the broad classes of small organic molecules (e.g., atorvastatin, fluticasone, clopidogrel) and "biologics" (infliximab, erythropoietin, insulin glargine),

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Polymers and plastics such as polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polystyrene and polycarbonate

7 0
3 years ago
The gravitational force exerted by an object is given by F = mg, where F is the force in newtons, m is the mass in kilograms, an
Andre45 [30]

The height of the column is 0.457 m and the mass of the atmosphere is calculated as 1.03 × 10 ⁴ kg.

<h3>What is Pascal? </h3>

Pascal is defined as the force per unit area. It expressed in Newton pr square meter of area.

1 Pa = 1 N / m²

Pressure = force / Area

According to the question, the expression of force is as given below

F = mg

where,

F is the force,

m is the mass,

g is equal to the acceleration due to the gravity

Now, the area of the atmosphere is 1 m².The pressure is 1 atm. Pressure in Pascal.

1 atm = 1.01325 × 10 5pa

Therefore, the expression for pascal become as follows.

1.01325 × 10 5 pa = mg /area

1.01325 × 10 5 pa = m × 9.81 m/s² / 1 m²

M = 1.01325 × 10 5 pa × 1 m² / 9.81 m² × 1 Nm -² /1 pa × 1 kg m-² / 1 N

1.03 × 10 ⁴ kg

Given,

The density is 22.6 g /mL , pressure is 1 atm, and area is 1 m²

The relation between density and pressure can be given as follows.

P = hpg… … …(1 )

were , h is the height of the column

p is the density.

Hpg = 1.01325 × 10 5 pa × 1 N/m² /1 pa

H = 1.01325 × 10 5 N/m² / pg × 1 kg ms-² / 1 N

= 1.01325 × 10 5 kg m-¹ s -² / 22.6 g mL -1 × 1 kg/ 10 ³ g × 1 mL / 10 -6 m ³ × 9.81 m s- ²

= 0.457 m

Therefore, the height of the column is 0.457 m.

Thus, we concluded that the height of the column is 0.457 m and the mass of the atmosphere is calculated as 1.03 × 10 ⁴ kg.

learn more about density:

brainly.com/question/952755

#SPJ4

7 0
1 year ago
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