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Keith_Richards [23]
3 years ago
13

What is the point of previewing? a. to get the gist of the text you don’t have read the whole text c. to gather as much informat

ion on the text as possible so you can better understand the text when read. b. to save time d. none of the above Please select the best answer from the choices provided A B C D
Chemistry
1 answer:
Murljashka [212]3 years ago
7 0

C. TO GATHER AS MUCH INFORMATION ON THE TEXT AS POSSIBLE SO YOU CAN BETTER UNDERSTAND THE TEXT WHEN YOU READ


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PLEASe help. How many ions? With picture.
Likurg_2 [28]
Since this equation is balanced, we know that the law of conversation of mass id applied, and we could calculate easily. 

Na=  2
NO3= 2
Ca= 1
<span>Cl= 1</span>

5 0
3 years ago
Can someone pls help me!!
Black_prince [1.1K]

Answer:

the answer is b

Explanation:

so the arrows signify the movement/ flow of energy from one organism to the next. so as one animal consumes another the energy from the the consumed animal flows through the consumer. its like eating a protein bar and the energy the protein bar gives you is what you have gotten from consuming the bar.

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3 years ago
Determine whether the following statements describe chemical or physical properties: (a) Oxygen gas supports combustion. (b) Fer
sdas [7]

Explanation:

A change that does not cause any change in chemical composition of a substance is known as a physical change.

For example, mass, density, volume etc are all physical changes.

On the other hand, a change that brings change in chemical composition of a substance is known as chemical change.

For example, combustion, toxicity, reactivity etc are all chemical changes.

Hence, following statements are identified as chemical or physical changes as follows.

(a) Oxygen gas supports combustion : Chemical change

(b) Fertilizers help to increase agricultural production : Chemical change

(c) Water boils below 100^{o}C on top of a mountain : Physical change

(d) Lead is denser than aluminum : Physical change

(e) Uranium is a radioactive element : Chemical change

7 0
3 years ago
Which binary molecular compound includes an element with five atoms of one element?
uranmaximum [27]

Answer:

For example, N2O4 is referred to as dinitrogen tetroxide, not dinitrogen tetraoxide, and CO is called carbon monoxide, not carbon monooxide.

...

Binary molecular (covalent) compounds.

Prefixes used in chemical nomenclature

prefix number of atoms

tetra- 4

penta- 5

hexa- 6

Explanation:

6 0
2 years ago
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miv72 [106K]

Answer: The Hubble

Explanation:

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2 years ago
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