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joja [24]
2 years ago
13

Which of the following are compounds (select all that apply)

Chemistry
1 answer:
olga2289 [7]2 years ago
3 0

Answer:

KNO2, KBr

Explanation:

Chemical compounds are any substance composed of identical molecules consisting of atoms of two or more chemical elements. So NO2 and KBr are compounds, Br2 and Fe are not.

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What distance in kilometers can you drive if your car gets 14.00 kilometers per liter and you have 35.00 liters of gas?​
agasfer [191]

2.5 km is the distance you can travel if a car gets 14 kilometers per liter and have 35 liters of gas.

Total distance traveled in 1 liter = 14 km

Total gas in the car = 35 liters

We have to find how much distance can be covered in in35 liters of gas.

Distance is the length of the path traveled between two points. It is the total movement of an object in a direction. It measures length.

Distance = 35/14

Or, distance = 2.5 km

Therefore, the total distance that can be covered by a car in 35 liters of gas is 2.5 km.

To learn more about distance, visit: brainly.com/question/15172156

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7 0
1 year ago
A 2.00 g sample of a bromine oxide (brxoy) is converted to 2.94 g of agbr. all the bromine in the original oxide compound ends u
qwelly [4]
In comparing two isotopes of the same element, the atomic number, stays the same.

Allow me to explain: The protons in an isotope ALWAYS stays the same, but the neutrons change. But, what's the atomic number made up of? 

Protons, which means it won't change. 

However, the atomic mass is made up of neutrons + protons, so only the atomic mass would change - not the atomic number.  
4 0
3 years ago
You travel 3 miles in a sleigh at 5 mi/h. How long in minutes were you traveling in the sleigh?
brilliants [131]

To work out the time taken to travel a certain distance a ta certain speed, we divide the distance by the speed.


So, 3/5 = 0.6 hours. To convert this to minutes, we need to work out 0.6 of 60. We can do this by simply multiplying 0.6 by 60, to get 36 minutes.



Hope I helped! xx


5 0
3 years ago
Compared with the energy it takes to separate oxygen and hydrogen from water. How much energy is released when they recombine?.
Stolb23 [73]

The same amount of energy is released when they recombine.

<h3>How to separate oxygen and hydrogen from water?</h3>
  • Electrolysis is a promising choice for without carbon hydrogen creation from inexhaustible and atomic assets.
  • Electrolysis is the method involved with utilizing power to part water into hydrogen and oxygen.
  • This response happens in a unit called an electrolyzer.
  • Electrolyzers can go in size from little, apparatus size hardware that is appropriate for limited scope dispersed hydrogen creation to huge scope, focal creation offices that could be tied straightforwardly to sustainable or other non-ozone depleting substance radiating types of power creation.
<h3>How Does it Work?</h3>

Like energy components, electrolyzers comprise of an anode and a cathode isolated by an electrolyte. Different electrolyzers capability in various ways, fundamentally because of the different kind of electrolyte material included and the ionic species it conducts.

To learn more about electrolysis from the given link

brainly.com/question/24063038

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4 0
1 year ago
What is the molarity of a solution that is made by dissolving 100.0 grams of lithium hydroxide in 750.0 mL of water?
vredina [299]

Answer:

The answer to your question is: 5.6 M

Explanation:

Data

Molarity = ?

mass of LiOH = 100 g

final volume = 750 ml

MW LiOH = 7 + 16 + 1 = 24 g

Formula

Molarity = moles / volume

Process

                            24 g ------------------ 1 mol

                          100 g ------------------   x

                              x = (100 x 1) / 24

                              x = 4.2 moles of LiOH

Molarity = 4.2 / 0.750

Molarity = 5.6 M

3 0
3 years ago
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