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4 years ago

6th grade science please answer both ! :))

Chemistry

1 answer:

Elanso [62]4 years ago

4 0

Answer:

21. Erosion causes physical changes. For example - Land degradation, deforestation.

20. B statement is closely related to climate.

hope it helps!

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What are the units of k in the following rate law?

Ludmilka [50]

Answer:

B. $\frac{1}{M^{2} s }$

Explanation:

The unit for rate is M/s while the unit for each molecule should be M. You can find the unit for k by putting the units for rate and the molecules into the equation

rate= k{X][Y]

M/s= k * $M^{2}$ * $M^{1}$

k= (M/s) / ( $M^{3}$ )

k= $\frac{1}{M^{2} s }$

You can also use this predetermined formula to solve this problem faster: k= $\frac{M^{1-n} }{s }$

Where n is the number of molecule. There are 3 molecule(2X and 1Y) so n=3, so

k= $\frac{M^{1-n} }{s }$

k= $\frac{M^{1-3} }{s }$ = $\frac{m^{-2}}{s}$ = $\frac{1}{M^{2} s }$

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4 years ago

The orbital radii of four planets in our solar system is shown in the following table. Orbital Radii Planet Orbital Radii (AU) W

nalin [4]

Answer:

w and x

Explanation:

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3 years ago

What is the name of the ionic compund formed from lithium and bromine?

omeli [17]

Lithium Bromine (LiBr) is formed from them....

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3 years ago

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Identify the for of energy (A)thermal (B)kinetic (C)chemical (D)electrical

RoseWind [281]

Answer:

C Chemical Energy

Explanation:

food gives us chemical energy which may be transformed to other later..

please mark me brainliest

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3 years ago

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2H2 + 02>2 H20 What is the reaction

Murrr4er [49]

Answer: The actual reaction to make water is a bit more complicated: 2H2 + O2 = 2H2O + Energy. In English, the equation says: To produce two molecules of water (H2O), two molecules of diatomic hydrogen (H2) must be combined with one molecule of diatomic oxygen (O2). Energy will be released in the process.

Explanation:

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3 years ago