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n200080 [17]
3 years ago
5

Which of the following is NOT an example of how watersheds can change over time?

Chemistry
1 answer:
kow [346]3 years ago
8 0

Answer:

D. Flooding occurs when too much rain falls upstream.

Explanation:

Flooding is not a change in a watershed.

A, B, and C are wrong. They all represent changes in a watershed.

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A student needs exactly 1 gram of baking powder to conduct an experiment. The balance reads 0.37 grams. How
sammy [17]

Answer:

B

Explanation:

If the student needs one gram but so far only has 0.37 grams, then the amount they need is the difference between what they need and how much they already have. 1-0.37=0.63 grams.

...which isn't actually an option because none of them have decimal points but I would say it is B anyway because it is the equivalent ratio and maybe there was a typo.

Hope this helped!

6 0
3 years ago
Read 2 more answers
Types of isomers possible for ch3 ch2 ch2 ch3
puteri [66]

Answer:

It has two isomers; n-butane and isobutane. Here n-butane is a straight-chain compound with four carbon atoms bonded with single covalent bonds. Explanation: Butane is an alkane with four carbon atoms so molecular formula is C4H10.

Explanation:

4 0
2 years ago
Jean and her mother were taking a walk when they saw the two rocky outcrops in the diagram below.
Veseljchak [2.6K]

Answer:

you have to attach the diagram

Explanation:

5 0
2 years ago
What is the total number of oxygen atoms represented in the formula na2c03.10h2o?
Wewaii [24]

As per the given chemical formula- Na2CO3.10H2O, one mole of the chemical compound contains 13 moles of oxygen atoms. Hence

Number of moles of oxygen atoms in one mole of Na2CO3.10H2O = 13

number of moles of oxygen atoms in 0.2 moles of Na2CO3.10H2O = 13 X 0.2 = 2.6

Now, one mole of a substance contains 6.022 X 10^23 particles of the substance. Thus

number of atoms of oxygen in one mole of oxygen atom = 6.022 X 10^23

number of moles of oxygen atoms in 2.6 moles of oxygen atoms = 2.6 X 6.022 X 10^23 = 15.657 X 10^23

= 1.566 X 10^24

Thus, there are 1.566 X 10^24 atoms of oxygen in 0.2 moles of Na2CO3.10H2O.
4.7
7 0
3 years ago
Ionic character of lih
adoni [48]
I believe LiH becomes HF 
8 0
3 years ago
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