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2 years ago

8

Ionic bonding is the result of electron transfer. _ electrons and become positive ions. While, _ gai

n electrons an become negative ions.

1 answer:

MAVERICK [17]2 years ago

4 0

Answer:

metal lose electrons
non metal gain electrons

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Requiring industries to recycle 25% of plastics in their manufacturing process is an example of: Risk communication Risk assessm

Tomtit [17]

Answer:

Risk management

Explanation:

Risk communication is exchange of the advice, real-time information and the opinions between the experts and the people which are facing threats to their economic, health, or well-being.

Risk assessment is overall process where the hazards and the risk factors which have potential to cause the harm is identified.

Risk perception is subjective judgement which people/ experts make about characteristics and the severity of the risk.

Risk management is evaluation, identification and prioritization of the risks followed by the coordinated and the economical application of the resources to monitor, minimize and control probability of the unfortunate events.

Thus, Option D is correct because in risk management, a Quantitative Solution is given to decrease risk level like to recycle the plastic.

5 0

4 years ago

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What is kinetic energy of a 100 kg object that is moving with a speed of 15 m/s

elena-s [515]

Answer:

16875 Joules

Kg m^2 s^-2 = Joule ,so The kinetic energy of a body of mass 150 Kg moving at 15m/s is 16875 Joules.

Explanation:

6 0

3 years ago

1) you are building a model plane that needs small block inside to balance its weight. you find that the block material you are

blagie [28]

Answer:

then it will move 1 too 2

right maybe

Explanation:

7 0

3 years ago

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The heat of combustion of propane, C3H8 (g) is -2057 kJ/mol. What would be the enthalpy change if enough propane was burned to g

Digiron [165]

Considering the reaction stoichiometry, the enthalpy change if enough propane was burned to give off 12 moles of carbon dioxide gas is 8228 kJ.

The balanced reaction is:

C₃H₈(g) + 5 O₂(g) → 3 CO₂(g) + 4 H₂O(l)

The heat of combustion of propane, C₃H₈, is -2057 kJ/mol. This is, 2057 kJ is released for every 1 mol C₃H<u>₈</u>.

So to determine the enthalpy change if enough propane was burned to emit 12 moles of carbon dioxide, you must take into account the stoichiometry of the reaction.

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

C₃H₈: 1 mole
O₂: 5 moles
CO₂: 3 moles
H₂O: 4 moles

Then you can apply the following rule of three: if by stoichiometry 3 moles of CO₂ are produced by 1 mole of C₃H₈, 12 moles of CO₂ are produced by how many moles of C₃H₈?

$amount of moles of C_{3} H_{8} =\frac{12 moles of CO_{2}x1 mole of C_{3} H_{8} }{3 moles of CO_{2}}$

<u><em>amount of moles of C₃H₈= 4 moles</em></u>

So to determine the enthalpy change, you can apply the following rule of three: If for each mole of C₃H₈ 2057 kJ are released, for 4 moles of C₃H₈ how much heat is released?

$Heat released=\frac{4 molesx2057 kJ}{1 mole}$

<u><em>Heat released= 8228 kJ</em></u>

The enthalpy change if enough propane was burned to give off 12 moles of carbon dioxide gas is 8228 kJ.

Learn more:

5 0

3 years ago

Two trays of lasagna are identical except for their thermal energies.

Akimi4 [234]

Answer:

the one with less thermal energy

Explanation:

thermal energy is heat

7 0

3 years ago

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