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
Veseljchak [2.6K]
3 years ago
5

1. Which of the following is an example of a hypothesis?

Chemistry
1 answer:
sashaice [31]3 years ago
5 0

Answer:the correct answer is c

Explanation:

You might be interested in
What is a catalyst?
luda_lava [24]

a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.

 -  a person or thing that precipitates an event.

7 0
3 years ago
Read 2 more answers
Help How many atoms of hydrogen(gas) form if 10 grams of aluminum react? 2Al + 6HCl = 2AlCl3 + 3H2
arlik [135]

Answer: 3.35x10²³atoms H2

Explanation: solution attached:

Convert mass of Al to moles

Do the mole to mole ratio between Al and H2

Convert moles of H2 to atoms using Avogadro's number.

4 0
3 years ago
If 507 g FeCl2 were used up in the reaction FeCl2 + 2NaOH Fe(OH)2(s) + 2NaCl, how many grams of NaCl would be made?
Ket [755]
Number of moles of FeCl2 used = mass/ molar mass 
Number of moles = 507/126.751 = 4.
If one mole of Fe reacts with two moles of sodium 
Then 4 moles of Fe produces 8 moles of sodium.
Number of moles of sodium = mass/molar mass
Molar mass of sodium chloride = 23 +35.5 = 58.5 g/mol
Hence mass = 8 * 58.5 = 468 g. Hence Option A.

6 0
3 years ago
Consider the following representation of a reaction mechanism.
Irina-Kira [14]

Answer:

The rate determining step is step 1

Explanation:

6 0
2 years ago
Read 2 more answers
How the relative density of a substance is related to the density calculate the density of iron if its relative density is 2 and
il63 [147K]

Answer:

How the relative density of a substance is related to the density calculate the density of iron if its relative density is 2 and a density of water is 2gcm -3

R.d= relative density of substance/ relative density of water

R.d= 2/2

R.d= 1gcm-3

Explanation:

5 0
3 years ago
Other questions:
  • Determine whether each compound is soluble or insoluble. If the compound is soluble, list the ions present in solution. AgNO3 Pb
    8·2 answers
  • You have two perfectly insulated cups. One contains water and the other contains an equal volume of another liquid that has half
    7·1 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
  • What is the number “4” in SiCl4? a subscript a coefficient a product a reactant
    7·2 answers
  • Why is the absolute dating of rocks important?
    14·1 answer
  • Why is ice melting a physical change?
    14·2 answers
  • Write the formula for zinc dichromate
    7·1 answer
  • 3. If you start with 8x1025 molecules of Cl, and 25 grams of KI, how many grams of KCl would
    6·1 answer
  • Where did you walk? what did you find most enjoyable while walking: listening to music, listening to an audio book, or nothing?
    7·1 answer
  • A gas cylinder contains exactly 1 mole of oxygen gas (O2). How many molecules of oxygen are in the cylinder?.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!