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joja [24]
3 years ago
11

A b c d e f g h i j k l m n o p q r s t u v w x y z

Chemistry
2 answers:
pochemuha3 years ago
8 0

Answer:

B

Explanation:

The answer is substitution

enyata [817]3 years ago
6 0
It’s B. Substitution hope this helps
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An atom of argon has a radius rar = 88 pm and an average speed in the gas phase at 25°C of 172 m/s.
Rudik [331]

Answer:

1.2* 10³ rNe.

Explanation:

Given speed of neon=350 m/s

Un-certainity in speed= (0.01/100) *350 =0.035 m/s

As per heisenberg uncertainity principle

Δx*mΔv ≥\frac{h}{4\pi }

4π

h

..................(1)

mass of neon atom =\frac{20*10^{-3} }{6.22*10^{-23} } =3.35*10^{-26} kg

6.22∗10

−23

20∗10

−3

=3.35∗10

−26

kg

substituating the values in eq. (1)

Δx =4.49*10^{-8}10

−8

m

In terms of rNe i.e 38 pm= 38*10^{-12}10

−12

Δx=\frac{4.49*10^{-8} }{38*10^{-12} }

38∗10

−12

4.49∗10

−8

=0.118*10^{4}10

4

* (rNe)

=1.18*10³ rN

= 1.2* 10³ rNe.

Explanation:

This is the answer

7 0
3 years ago
Describe two examples of something that has potential energy to do something
blsea [12.9K]

Answer: the heavy ball of a demolition machine is storing energy when it is held at an elevated position.

Which has potential energy

Explanation:

5 0
3 years ago
Read 2 more answers
The sun melts a popsicle. is what type pf transfer
denis23 [38]

Answer:

heat?

Explanation:

the sun warms the popsicle, therefore melting th popsicle.

sry if this is wrong

7 0
3 years ago
Identify the parts of the equation by dragging each label below to the correct arrow on the diagram. Drag the items on the left
Natalka [10]

The missing labels are:

  • CuCO₃(s), H₂SO₄(aq): reactants.
  • +: plus sign.
  • CuSO₄(aq), H₂O(l), CO₂(g): products.
  • (s): solid.
  • (aq): aqueous.
  • (l): liquid.
  • (g): gaseous.

<h3>What is a chemical equation?</h3>

It is a way to represent a chemical reaction.

Let's consider the following chemical equation.

CuCO₃(s) + H₂SO₄(aq) →  CuSO₄(aq) + H₂O(l) + CO₂(g)

The missing labels are:

  • CuCO₃(s), H₂SO₄(aq): reactants. They are on the left side of the equation.
  • +: plus sign. It separates substances.
  • CuSO₄(aq), H₂O(l), CO₂(g): products. They are on the right side of the equation.
  • (s): solid.
  • (aq): aqueous.
  • (l): liquid.
  • (g): gaseous.

Learn more about chemical equations here: brainly.com/question/26227625

#SPJ1

6 0
2 years ago
Pablo drove 260 miles using 12 gallons of gas. at this rate, how many gallons of gas would he need to drive 286 miles?
Naddik [55]
260 miles with 12 gallons of gas
260 miles/12 gallons=21.6667 miles/1 gallon
286 miles/(21.6667 miles/1 gallon)=13.2 gallons of gas
7 0
4 years ago
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