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jok3333 [9.3K]
3 years ago
15

You need to measure the length of your driveway. which measuring tool would produce accurate results that you would expect to be

the same as those found by others?
your hand span

a string cut to the length of the tip of your finger to the bottom of your palm

a meter stick with only centimeters

a ruler with millimeters and centimeters
Chemistry
2 answers:
AlekseyPX3 years ago
5 0

Answer:a meter stick with only centimeters

Hope this help:)

11Alexandr11 [23.1K]3 years ago
4 0
I would think a Meter stick since a driveway is big so a string only cut a few inches would not work, mills and centi. are to small so a meter should work best
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3 years ago
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In order to promote the common ion effect, the concentration of the common ion must first:_____.
Svet_ta [14]

We need to increase the concentration of common ion first, in order to promote the common ion effect

<h3>What is the Common ion effect?</h3>

It is an effect that suppresses the dissociation of salt due to the addition of another salt having common ions.

For example, a saturated solution of silver chloride in equilibrium has Ag⁺ and Cl⁻ . Sodium Chloride is added to the solution and has a common ion Cl⁻. As a result, the equilibrium shifts to the left to form more silver chloride. Thus, solubility of AgCl decreases.

The Equilibrium law states that if a process is in equilibrium and is subjected to a change

  • in temperature,
  • pressure,
  • the concentration of reactant or product,

then the equilibrium shifts in a particular direction, according to the condition.

Thus, an increase in the concentration of common ion promotes the common ion effect.

Learn more about common ion effect:

brainly.com/question/23684003

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3 0
1 year ago
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These were mainly helium and hydrogen, which are still by far the most abundant elements in the universe. Present observations suggest that the first stars formed from clouds of gas around 150–200 million years after the Big Bang. Heavier atoms such as carbon, oxygen and iron, have since been continuously produced in the hearts of stars and catapulted throughout the universe in spectacular stellar explosions called supernovae.

6 0
2 years ago
27. Sample of neon gas has a pressure of 4.1 atm and argon gas with a pressure of 3.2 atm are added to a
MrRa [10]

Answer:

Option C. 13.5 atm

Explanation:

From the question given above, the following data were obtained:

Pressure of Neon (Pₙₑ) = 4.1 atm

Pressure of Argon (Pₐᵣ) = 3.2 atm

Pressure of nitrogen (Pₙ₂) = 6.2 atm

Total pressure (Pₜ) =?

The total pressure in the container can be obtained by adding the pressure of the individual gases. This is illustrated below:

Pₜ = Pₙₑ + Pₐᵣ + Pₙ₂

Pₜ = 4.1 + 3.2 + 6.2

Pₜ = 13.5 atm

Therefore, the total pressure in the container is 13.5 atm

8 0
3 years ago
How many moles of oxygen are in 8.24 moles Mg(NO3)2
malfutka [58]

Answer:

49.4 mol Oxygen

Explanation:

Mg(NO3)2   ----- 6 O

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5 0
3 years ago
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