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Tcecarenko [31]
2 years ago
6

Which statement correctly describes the location and charge of the electrons in an atom?

Chemistry
1 answer:
maxonik [38]2 years ago
3 0

Answer:

D

Explanation:

The electrons revolve around the nucleus and they contain negative charge

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If i add water to 100 mL of a 0.15M NaOH solution until the final volume 150mL , what will the molarity of the diluted solution
labwork [276]
0,15 moles of NaOH-------in------------1000ml
x moles of NaOH------------in--------100ml
x = 0,015 moles of NaOH

final volume = 150ml

0,015 moles of NaOH---in-------150ml
x moles of NaOH--------------in-----1000ml
x = 0,1 moles of NaOH

answer:  0,1mol/dm³  (molarity)
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3 years ago
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masha68 [24]

Answer:

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Explanation:

5 0
2 years ago
I need an answer ASAP
Oduvanchick [21]

Time taken for star to reach Earth = 7.5 years

<h3>Further explanation</h3>

Given

7.5 light years(distance Earth-star)

Required

Time taken

Solution

Speed of light=v = 3 x 10⁸ m/s

1 light years = 9.461 × 10¹⁵ m= distance(d)

So time taken for 1 light years :

time(t) = distance(d) : speed(v)

t = 9.461 × 10¹⁵ m : 3 x 10⁸ m/s

t = 3.154 x 10⁷ s = 1 years

So for 7.5 light years, time taken = 7.5 years

8 0
3 years ago
What is 1 mol / 66.04g ​
____ [38]

Answer:

15.142338 mol/kg

Explanation:

(1 mole) / (66.04 grams)

5 0
3 years ago
Diamonds are composed of __________ in a ___________lattice. A. silicon, trigonal planar B. quartz, octahedral lattice C. carbon
Nata [24]

Diamonds are composed of carbon in a tetrahedral lattice. That is option C.

<h3>What is a diamond?</h3>

A diamond of defined as an allotrope or one of the major forms of the element, carbon in nature.

These carbon atoms are arranged within the diamond in a face centered cubic tetrahedral lattice shape.

Therefore, Diamonds are composed of carbon in a tetrahedral lattice.

Learn more about carbon here:

brainly.com/question/19083306

#SPJ1

6 0
2 years ago
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