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2 years ago

10

What are rotation and revolution and how do they affect Earth?

1 answer:

Ivenika [448]2 years ago

7 0

Answer:

Rotation refers to an object's spinning motion about its own axis. "Revolution" refers the object's orbital motion around another object. For example, Earth rotates on its own axis, producing the 24-hour day. Earth revolves about the Sun, producing the 365-day year.

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Reaction rate is increased by an increase in kinetic energy

marta [7]

Answer:

Reaction rate is increased by an increase in kinetic energy

of the reacting particles when their

is _temperature_

increased

A . Collision theory

B . Surface Area

C . Temperature

D. Concentration

8 0

1 year ago

The enthalpy of combustion of naphthalene (MW = 128.17 g/mol) is -5139.6 kJ/mol. How much energy is produced by burning 0.8210 g

bazaltina [42]

The energy produced by burning : -32.92 kJ

<h3>Further explanation</h3>

Delta H reaction (ΔH) is the amount of heat change between the system and its environment

(ΔH) can be positive (endothermic = requires heat) or negative (exothermic = releasing heat)

The enthalpy and heat(energy) can be formulated :

$\tt \Delta H=\dfrac{Q}{n}\rightarrow n=mol$

The enthalpy of combustion of naphthalene (MW = 128.17 g/mol) is -5139.6 kJ/mol.

The energy released for 0.8210 g of naphthalene :

$\tt Q=\Delta H\times n\\\\Q=-5139.6~kJ/mol\times \dfrac{0.8210~g}{128.17~g/mol}~\\\\Q=-32.92~kJ$

3 0

2 years ago

What weight (in grams) of h2so4 would be needed to make 750.0 ml of 2.00 m solution?

frosja888 [35]

Answer:

I think the answer should be 147

Explanation:

8 0

1 year ago

What is the electron configuration of an element with atomic number 15? A. 1s2 2s2 2p6 B. 1s2 2s2 2p6 3s2 3p5 C. 1s2 2s2 2p6 3s2

kipiarov [429]

B
hopes this helps!!!!!!!!!

4 0

2 years ago

Read 2 more answers

How many Atoms are in 12 NaBr

frozen [14]

Answer:

there are 12 atoms in 12 sodium bromide

7 0

2 years ago