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tino4ka555 [31]

2 years ago

12

Considering the following precipitation reaction: Pb(NO3)2(aq) + 2Kl(aq) – Pbl (s) + 2KNO3(aq) IN What is the correct complete i

onic equation?

1 answer:

brilliants [131]2 years ago

6 0

Answer:

Pb²++2I−→PbI2(s)

yellow precipitate

Explanation:

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Why do you think polar aprotic solvents increase the rate of an sn2 reaction

viva [34]

Polar protic solvents actually speed up the rate of the unimolecular substitution reaction because the large dipole moment of the solvent helps to stabilize the transition state. The highly positive and highly negative parts interact with the substrate to lower the energy of the transition state.

5 0

3 years ago

A 2.2 M solution is made by with 0.45 moles of a solute. What is the final volume of this solution?

Savatey [412]

Answer: The final volume of this solution is 0.204 L.

Explanation:

Given: Molarity of solution = 2.2 M

Moles of solute = 0.45 mol

Molarity is the number of moles of solute present divided by volume in liters.

$Molarity = \frac{no. of moles}{Volume (in L)}$

Substitute the values into above formula as follows.

$Molarity = \frac{no. of moles}{Volume (in L)}\\2.2 M = \frac{0.45}{Volume}\\Volume = 0.204 L$

Thus, we can conclude that the final volume of this solution is 0.204 L.

7 0

3 years ago

When baking cookies, what is one chemical change that takes place?

Alexus [3.1K]

Answer:

A. chocolate chips melting

Explanation:

It is a chemical change. cookies will soften and melt slightly as the cookies bake. the change is solid to liquid.

6 0

3 years ago

Read 2 more answers

Really need help with this<br> Will give brainliest to whoever has the correct answer

lukranit [14]

Answer:

$a=0.4\ m/s^2$

Explanation:

1. Given that,

Initial speed of a bicycle, u = 4 m/s

The final speed of a bicycle, v = 6 m/s

Time, t = 6 s

We need to find the acceleration of the bicycle. We know that, acceleration is equal to the change in speed divided by time taken. So,

$a=\dfrac{v-u}{t}\\\\a=\dfrac{6-4}{5}\\\\a=0.4\ m/s^2$

So, the acceleration of the bicycle is equal to $0.4\ m/s^2$ .

5 0

3 years ago

Below is a picture of two blocks made of different materials. Block A Block B grams grams If Block A is located on the Moon and

AURORKA [14]

Answer:

A

Explanation:

this is because density is the mass per unit volume of an object

4 0

3 years ago