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Daniel [21]
3 years ago
7

The radius of a nickel atom is 125 pm. How many nickel atoms would have to be laid side by side to span a distance of 1.74 mm

Chemistry
1 answer:
Darya [45]3 years ago
5 0

Answer:

<em>6960000 Nickel atoms</em>

<em></em>

Explanation:

radius = 125 pm = 125 x 10^-12 m

diameter of each atom = 125 pm x 2 = 250 pm = 250 x 10^-12 m

span of distance to be achieved = 1.74 mm = 1.74 x 10^-3 m

number of nickel atoms = (1.74 x 10^-3 m)/(250 x 10^-12 m) = <em>6960000 Nickel atoms</em>

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Which of the following describes metallic character on the periodic table? Question 1 options: A) It increases as you move right
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Answer:

D

Explanation:

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3 0
3 years ago
If an atom gains an electron it is known as what ? And has a negative charge
bekas [8.4K]
If an atom gains an electron and gets a negative charge because of it, it is a negatively charge ion AKA an anion.
6 0
3 years ago
What is the number of oxygen atoms in 32grams of the gas​
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7 0
2 years ago
A solution containing 0.050 g of an unknown nonelectrolyte in 2.50 g of cyclohexane (Kf = 20.4 oC/m &amp; F.P. 6.6 oC) was found
ANEK [815]

Answer:

The molar mass of the unknown substance is 255g/mole

Explanation:

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Therefore ΔT = 6.6 - 5 = 1.6 °C

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Therefore m = 1.6/20.4 = 0.0784 m

number of moles in 2.50 g of cyclohexane = 0.0784 m or 0.0784 moles of the substance in 1000 grams of cyclohexane. That is

2.5 ×0.0784/1000 moles in 2.5 graams of cyclohexane  that is

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1.96 × 10⁻⁵ moles of the substance weighs 0.050 grams

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7 0
3 years ago
A gas sample enclosed in a rigid metal container at room temperature (20.0∘C∘C) has an absolute pressure p1p1p_1. The container
choli [55]

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Therefore

P2 = P1T2/T1 = 313P2/293

P2 = 1.06P1

3 0
4 years ago
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