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kupik [55]
3 years ago
7

Which of the following best describe an atomic number? An element identity is defined by its atomic number this means it represe

nts the number of
Chemistry
1 answer:
olga2289 [7]3 years ago
5 0

a)Atomic number is the number of protons in the nucleus of an atom.

b)atomic number represents the number of protons

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sergiy2304 [10]
Your answer is C 
amino acids are created by a bond of two carbon atoms and each carbon is part of a different group, one negative and one positive. when the chemical reactions occurs, it creates the several diff amino acids
4 0
3 years ago
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Tengo que resolver con procedimiento
zzz [600]

Answer:

Distance = 200 km

Distance = 204 km

Speed = 77 km/h

Time = 21.42 h

Explanation:

Given:

A.

Speed = 100 km/h , Time = 2 h

Find:

Distance

B.

Speed = 68 km/h , Time = 3 h

Find:

Distance

C.

Distance = 154 km , Time = 2 h

Find:

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D.

Distance = 1500 km speed = 70 km/h

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Computation:

Speed = distance / time

A.

Distance = 100 x 2

Distance = 200 km

B.

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Distance = 204 km

C.

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Speed = 77 km/h

D.

Time = 1500 / 70

Time = 21.42 h

6 0
3 years ago
Estimate the heat of neutralization of H3PO4 in kJ/mol given these data: Heat transferred = 2.2 x 102 J Moles of H3PO4 = 1.5 x 1
barxatty [35]
<span>write out the balance equation
3NaOh+H3PO4->Na3PO4+3H2O
You are given everything needed to calculate
q=heat transfer=2.2*10^2,
H3PO4 moles= 1.5*10^-3,
NaOH moles=5.0*10^-3
equation is deltaHneutraliztion=q/Moles of limiting reagent H3PO4 is limiting reagent because lowest moles, and is used up first
Now plug in variables
DeltaH=2.2*10^2(1.5*10^3)= 146.67kj/mole
Notice we had to convert J to kj,</span>
4 0
3 years ago
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On top of Mt. Yale in Colorado (elevation 14,202 feet), you step on a scale and weigh 183 pounds, using the same scale in New Or
babymother [125]
I believe the answer is A
7 0
3 years ago
True or False: The solute is ALWAYS a solid and the solvent is ALWAYS a liquid
sasho [114]

Answer:

false

Explanation:

Note that the solvent is the substance that is present in the greatest amount. Many different kinds of solutions exist. For example, a solute can be a gas, a liquid or a solid. ... Note that in each case, the solute particles are uniformly distributed among the solvent particles.

7 0
3 years ago
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