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sdas [7]
4 years ago
7

Which statement correctly describes the reactivity of noble gases, according to the octet rule?

Chemistry
1 answer:
Natali5045456 [20]4 years ago
8 0
Answer:


Their atoms have eight electrons in their valence shells, so noble gases are very unreactive.
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Please help due tomorrow <br> Giving Brainlesst
d1i1m1o1n [39]

Answer:

Down arrow:

-a car comes to a stop when a traffic light turns red

Up arrow:

-race car accelerates when a race begins

Circle:

-car driving 45 mile per hour down straight road

Explanation:

and i think the car going around a bend would be an up arrow

7 0
3 years ago
How many moles are equal to 1.2 x 10^21 molecules of lithium?
Shtirlitz [24]
1 mole --------------------------- 6.02 x 10²³ molecules
( moles lithium ) --------------- 1.2 x 10²¹ molecules

( moles lithium ) = (1.2 x 10²¹ ) x 1  / ( 6.02 x 10²³ )

= 1.2 x 10²¹ / 6.02 x 10²³

= 2.0 x 10⁻³ moles of lithium

Answer D

hope this helps!
4 0
3 years ago
What is the hydronium and hydroxide concentrations of a solution that is 5.0 x 10-3 M H2SO4.
Maksim231197 [3]

The hydronium and hydroxide concentrations of a solution that is 5.0 x 10-3 M H2SO4 is 2.7.

pH= -log[H+] - (i)

10^-3=H2So4

H+= 2×10-3

here ,

h2so4 ——— 2[H+] + so4^2-

thus [H+]= 2*10^(-3) because hydrogen ion has two moles

pH= -log[H+]

pH= -log(2×10^-3)

pH= 3-log2

pH= 3-log2pH= 2.7

The pH is 2.7

<h3>What is pH?</h3>

PH is the degree of alkalinity and acidicity in a solution.

Therefore, The hydronium and hydroxide concentrations of a solution that is 5.0 x 10-3 M H2SO4 is 2.7

Learn more about pH from the link below.

https://brainly.in/question/9937410

4 0
2 years ago
What about 50 g of water?
mario62 [17]

Answer:

Are you asking for this? 3.38 Tablespoons

10.14 Teaspoons

0.21 U.S. Cups

0.18 Imperial Cups

0.20 Metric Cups

50.00 Milliliters

5 0
3 years ago
WHAT IS THE DEFINITION FOR ISOTOPES, WHAT ARE EXAMPLES OF ISOTOPES, WHAT ARE NON EXAMPLES OF ISOTOPES AND WHAT ARE EXAMPLES OF I
natulia [17]

Answer:

WHAT IS THE DEFINITION FOR ISOTOPES

<u><em>the same atomic number (number of protons), but different mass number of neutrons and protons.</em></u>

WHAT ARE EXAMPLES OF ISOTOPES

<em><u>carbon</u></em>

<em><u>nitrogen</u></em>

<em><u>hydrogen</u></em>

WHAT ARE NON EXAMPLES OF ISOTOPES

<u><em>tiger-striped cat</em></u>

<u><em>idk other ones sorry...</em></u>

3 0
4 years ago
Read 2 more answers
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