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Rasek [7]
3 years ago
12

Bonds in which atoms share electrons are defined as _____ bonds.

Chemistry
1 answer:
Kaylis [27]3 years ago
5 0
Ionic, think about the way metals share electrons with other metals, resulting in malleability.
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An iron block of mass 18 kg is heated from 285 K to 318 K. If 267.3 kJ is required, what is the specific heat of iron? A. 450.00
valkas [14]

Answer:

  • <u>Option A. 450.00</u>

Explanation:

<u>1) Data:</u>

a) m = 18 kg

b) T₁ = 285 K

c) T₂ = 318 K

d) Q = 267.3 kJ

e) S = ?

<u>2) Principles and equations</u>

The specific heat of a substance is the amount of heat energy absorbed to increase the temperature of certain amount (gram, kg, or moles, depending on the definition or units) of the substance in 1 ° C or 1 K.

The mathematical relation between the specific heat and the heat energy absorbed is:

  • Q = m × S × ΔT

Where,

  • Q is the heat absorbed,
  • S is the specific heat, and
  • ΔT is the temperature increase (T₂ - T₁)

<u>3) Solution:</u>

<u>a) Substitute the data into the equation:</u>

  • 267.3 kJ = 18 kg × S × (318 K - 285 K)

<u>b) Solve for S and compute:</u>

  • S = 267.3 kJ / (18 kg × 33 K) = 0.45 kJ / (Kg . K)

The options have not units, but I notice that the first answer is 1,000 times the answer I obtained, so I will make a conversion of units.

<u>c) Convert to J /( kg . k):</u>

  • 0.45 kJ / (Kg . K) × 1,000 J / kJ = 450 J / (kg . K)

Now we can see that the option A is is the answer, assuming the units.

6 0
3 years ago
Use the drop-down menus to complete each statement.
aleksley [76]

<u>Explanation:</u>

<u>1. Have many moons:</u>

  • Jupiter is the fifth planet from the Sun and the biggest in the Solar System and it has fifty-three moons which are confirmed and twenty-six provisional moons and totally it has seventy-nine moons and it is the only planet which has many moons.

<u>2. Have a rocky composition:</u>

  • The planets which have rocky composition are also called the terrestrial planets.
  • The planets which have rocky composition are listed below mercury, venus, earth, and mars and they are smaller in size.

<u>3. Revolve quickly around the Sun: </u>

  • Mercury is the quickest planet, which rushes around the sun at 47.87 km/s. And it revolves around the sun quickly.

<u> 4. Rotate quickly on their axes: </u>

  • The giant gas planets like Jupiter, Saturn, etc... spin more quickly on their axes than the other planets

6 0
2 years ago
Read 2 more answers
If a neutral atom of chlorine has 17 electrons and 18 neutrons, how many protons does it have?
IceJOKER [234]
17, to be neutral it has to have equal number of protons and electrons
7 0
3 years ago
Read 2 more answers
This is very urgent please hurry!!?!!??!
yawa3891 [41]

Answer:

The greatest acceleration when the unbalanced force is applied will be experienced in :

A) The box with a mass of 2 kg

Explanation:

According to second law of motion the external unbalanced force is directly proportional to rate of change of momentum.

F = (Final momentum - initial momentum)/time

or

Force is equal to the product of mass and acceleration

F = m x a

Here a= acceleration

m = mass of the object

If Force is constant then acceleration is inversely proportional to mass

a =\frac{F}{m}

A) The box with a mass of 2kg

F = 8 N

a =\frac{8}{2}

a = 4 m/s2

B) The box with the mass of 4kg

a =\frac{8}{4}

a = 2 m/s2

C) The box with a mass of 6kg

a =\frac{8}{6}

a = 1.33 m/s2

D) The box with a mass of 8kg

a =\frac{8}{8}

a = 1 m/s2

3 0
3 years ago
Name of this product
DaniilM [7]

Answer:

Explanation:

ethyl 3-methylbenzoate

5 0
2 years ago
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