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Ket [755]
3 years ago
13

9) A cactus plant, a snake, and a hawk can be members of the same

Chemistry
1 answer:
Alex3 years ago
5 0
I have no idea A and d maybe
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What charge (positive, negative, neutral) does the complete atom<br> have?
Nitella [24]

Answer:

The positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. Most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen.

...

8 0
2 years ago
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What is the SI unit for energy? How is it abbreviated?
hjlf

Answer:

Joule - J

Explanation:

As energy is defined via work, the SI unit of energy is the same as the unit of work – the joule (J).

3 0
2 years ago
Suppose you have an Avogadro's number of nitrogen atoms. How many grams does this represent? Enter your answer to one decimal pl
shusha [124]

Answer:

2.3 x 10-23 g.

Explanation:

The mass of a single atom is the mass number, 14, is the mass in grams of one mole of carbon.

One mole of Nitrogen atom is 6.022 x 1023 atoms (Avogadro's number). This can then used to convert a nitogen atom to grams by the ratio:

mass of 1 atom / 1 atom = mass of a mole of atoms / 6.022 x 10^23 atoms.

mass of 1 atom = mass of a mole of atoms / 6.022 x 1023

mass of 1 N atom = 14 / 6.022 x 10^23 N atoms

mass of 1 N atom = 2.325 x 10^-23 g

The mass of a single Nitrogen atom is 2.325 x 10-23 g.

3 0
3 years ago
Explain using balanced chemical equations, the alkaline hydrolysis reaction of esters. ​
ser-zykov [4K]

Answer:

The alkaline hydrolysis of ester is known as saponification. When ester is heated with aqueous NaOH, sodium salt of acid and alcohol are formed.

3 0
2 years ago
What are some sources of non-point source water pollution?
kirza4 [7]

Answer:

Explanation:

Excess fertilizers, herbicides and insecticides from agricultural lands and residential areas.

Oil, grease and toxic chemicals from urban runoff and energy production.

Sediment from improperly managed construction sites, crop and forest lands, and eroding streambanks.

3 0
3 years ago
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