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sergij07 [2.7K]
3 years ago
11

PLS ANSWER!!!!

Chemistry
1 answer:
Levart [38]3 years ago
5 0

Answer:

Hello!!! Princess Sakura here ^^

Explanation:

The precipitate forms when one of the compounds is insoluble. In double replacement reactions, the positive ions and the negative ions are dissolved reactants that switch places to form the precipitation reaction.

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Use Hess law and the following equations to calculate H for the reactio below
aleksandr82 [10.1K]

Answer: B2H6 (g) + 3O2 (g) → B2O3 (s) + 3H2O (g) (ΔH = -2035 kJ/mol) 3H2O (g) → 3H2O (l) (ΔH = -132 kJ/mol) 3H2O (l) → 3H2 (g) + (3/2) O2 (g) (ΔH = 858 kJ/mol)

Explanation: ??

8 0
3 years ago
Which of the following are sources of revenue for media companies? A. Direct sales to producers B.advertising and subscriptions
Fed [463]

Answer:

c

Explanation:

5 0
3 years ago
Read 2 more answers
Give three examples, from the lab, where potential energy was converted to kinetic energy.
GREYUIT [131]

Give 3 Examples of where potential energy was converted to knlinetic energy:

Curtain

A ball before moving

An apple from the tree then falling down

When the Curtains are still, we call the that potential energy. If you move the curtains around, that is kinetic energy

The ball is still, that is potential energy. Then the ball is moving, the is kinetic energy

There is a apple ganging from a tree, that is potential energy. That apple is fall, this is kinetic energy

Hope this helps

Don't type or write in the answer, I'm not sure what from the lab means. These are a few potential into kinetic energy I could have think of!

4 0
3 years ago
How many moles of dinitrogen monoxide are present in 9.3 x 10^22 molecules of this compound?
Step2247 [10]

Answer:

<h2>0.15 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities.

From the question we have

n =  \frac{9.3 \times  {10}^{22} }{6.02 \times  {10}^{23} }  \\  = 0.154485...

We have the final answer as

<h3>0.15 moles</h3>

Hope this helps you

8 0
3 years ago
What best describes the bonding in a carbon dioxide molecule?
Grace [21]
A is the answer just did it
5 0
3 years ago
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