1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
joja [24]
3 years ago
13

20 POINTS!!! PLS HELP ME

Chemistry
2 answers:
Gala2k [10]3 years ago
5 0

Answer:

they just add heat, then it turns to water vapor

Explanation:

The first h20 is water the arrow represents adding heat, and the second h20 represent water vapor (water as a gas)

White raven [17]3 years ago
3 0

Answer:

Boiling is not a chemical reaction. It is a physical reaction because after being heated up to a boil turning into steam, it eventually cools back down to water. Like evaporation and then rain.

Explanation:

You might be interested in
Some elements are liquids or gases.<br><br><br> True <br> False
gregori [183]
The answer to this ? is true
4 0
3 years ago
3. If you start with 8x1025 molecules of Cl, and 25 grams of KI, how many grams of KCl would
miskamm [114]

Answer:

Percent yield = 89.1%

Explanation:

Based on the equation:

Cl₂ + 2KI → 2KCl + I₂

<em>1 mole of Cl₂ reacts with 2 moles of KI to produce to moles of KCl</em>

<em />

To solve this quesiton we must find the moles of each reactant in order to find the limiting reactant. With the limiting reactant we can find the moles of KCl and the mass:

<em>Moles Cl₂:</em>

8x10²⁵ molecules * (1mol / 6.022x10²³ molecules) = 133 moles

<em>Moles KI -Molar mass: 166.0028g/mol-</em>

25g * (1mol / 166.0028g) = 0.15 moles

Here, clarely, the KI is the limiting reactant

As 2 moles of KI produce 2 moles of KCl, the moles of KCl produced are 0.15 moles. The theoretical mass is:

0.15 moles * (74.5513g / mol) =

11.2g KCl

Percent yield is: Actual yield (10.0g) / Theoretical yield (11.2g) * 100

<h3>Percent yield = 89.1%</h3>
3 0
3 years ago
Ions can have a positive or negative charge. false or true
Fudgin [204]
True. Ions can have a positive or negative charge.
7 0
3 years ago
Read 2 more answers
Name two methods that can be used to break down compounds into simpler substance
kotykmax [81]
<span>Photolysis and hydrolysis. These are two methods that can be used to break down a compound into simpler substances and smaller units.

Water which is used to break the bonds of molecules and split molecules is used from hydrolysis. Hydrolysis is made of three types which include;
1. salt hydrolysis.
2. acid hydrolysis.
3. Base hydrolysis.
 Photolysis is well known to use energy from light to split the molecule and the same energy is referred to as photons which are used to break builds of molecules.</span>
7 0
3 years ago
Read 2 more answers
⚠️PLEASE HELP NO LINKS⚠️<br><br>The question is down below
Shtirlitz [24]

Answer:

D

Explanation:

pretty sure

4 0
3 years ago
Other questions:
  • In virginia and some other parts of the world, water has carved vast caverns out of underground limestone deposits. water, howev
    6·1 answer
  • It is estimated that 10 babies are born every 4 seconds. How many babies are born in<br> 1 minute?
    12·1 answer
  • Stuck stupid science homework. anyone know answers?
    13·1 answer
  • (a) Write the reaction for the overall oxidation of propane (C3H8) with oxygen to produce CO2 and water.
    14·1 answer
  • (i) Write the equation for the dissolution of CO2 in water to produce carbon (i) Write the equation for the dissolution of CO2 i
    6·1 answer
  • Match the following terms with their definitions:
    12·1 answer
  • Which of the following ions is in the lowest oxidation state?
    15·2 answers
  • Why is the cell a basic unit of life?
    9·2 answers
  • Formula equation is more informative than a word equation why​
    5·1 answer
  • How much energy is required to convert 100.0 g of water completely<br> to steam?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!