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
pochemuha
3 years ago
14

HELP ASAP ILL GIVE YOU 40 POINTS IF YOUR CORRECT!

Chemistry
2 answers:
disa [49]3 years ago
8 0

Answer:

Figure  7.4.1 : Balancing Equations. You cannot change subscripts in a chemical formula to balance a chemical equation; you can change only the coefficients. Changing subscripts changes the ratios of atoms in the molecule and the resulting chemical properties. For example, water (H2O) and hydrogen peroxide (H2O2) are chemically distinct substances. H2O2 decomposes to H2O and O2 gas when it comes in contact with the metal platinum, whereas no such reaction occurs between water and platinum. The subscripts are part of the formulas and once the formulas for the reactants and products are determined, the subscripts may not be changed. The coefficients indicate the number of each substance involved in the reaction and may be changed in order to balance the equation. The equation above indicates that one mole of solid copper is reacting with two moles of aqueous silver nitrate to produce one mole of aqueous copper (II) nitrate and two atoms of solid silver.

Explanation:

DiKsa [7]3 years ago
4 0

Answer: 6

Explanation:

Element                Quantity

Copper                        1

Silver                           2

Nitrogen                      1

Oxygen                        6

You might be interested in
A student observes chloroplasts in the micrograph of a cell.
allochka39001 [22]

Answer:

I think it's fungus or plant cell

6 0
2 years ago
Read 2 more answers
Which resource do these turbines gather?<br>A water<br>о<br>в<br>оll<br>C<br>natural gas<br>D. wind​
lapo4ka [179]

Answer:

D....

Explanation:

3 0
3 years ago
Aluminum reacts with chlorine gas according to the following equation shown below. How many
sladkih [1.3K]

Answer:

nCl= 0,062x3/2=0,093(mol)

Explanation:

7 0
2 years ago
How much energy is required to heat 36.0 g H2O from a liquid at 65°C to a gas at 115°C? The following physical data may be usefu
In-s [12.5K]

Answer:

energy required=qnet=87.75kJ

Explanation:

we will do it in three seperate step and then add up those value.

first step is to heat the sample of water upto 100C i.e upto boiling pont. because just after this sample of water started vaporization.

q 1= m c (T2-T1)

q1 = 36.0 g (4.18 J/gC) (100 - 65 C)

q1 = 5267 J =5.267kJ

next is to vaporize the sample at 100C

q2 = 36.0 g / 18.0 g/mol X 40.7 kJ/mol

q2= 81.4 kJ

Finally, heat the steam upto 115C

q3 = m c (T2-T1)

q 3= 36.0 g (2.01 J/gC)(115-100C)

q3 = 1085 J =1.085kJ

qnet=q1 +q2 +q3

energy required=qnet=87.75kJ

8 0
3 years ago
When adding or subtracting deelmals, how many digits should the answer contain?
Alexus [3.1K]

Answer:

Depends, but in most cases, 2.

It's best to use as many digits as possible to keep it accurate.

Explanation:

This varies between teachers, as most schools go with 2 decimal places.

This is something that depends in your situation.

You technically want as many decimals as possible to keep it as accurate, but most people stick with 2.

I personally do 3, and commonly do 5 sometimes.

5 0
2 years ago
Other questions:
  • Dry air is 78.08% nitrogen, 20.95% oxygen and 0.93% argon with the 0.04% being other gases. if the atmospheric pressure is 760.0
    8·2 answers
  • Which one is a true statement about endothermic reactions?
    10·2 answers
  • By studying fossils, scientists get an idea of ....
    14·1 answer
  • Match these items.
    13·1 answer
  • What is the oxidation number of S in Li¿SOÁ?<br> A +1 <br> B +2 <br> C +5 <br> D +6
    5·1 answer
  • What is produced during the replacement reaction of Cu(NO3)2 and Zn?
    11·1 answer
  • Which apparatus is used in measuring a base in laboratory? Show Options a.  pipette b. measuring cylinder c. burette d. conical
    12·1 answer
  • Use the periodic table to match each of the following element symbols to its name, atomic mass, or atomic number. (3 points)
    11·1 answer
  • Calculate the amount of mole of gas which occupies 250cm at S.T.P ​
    15·1 answer
  • In this experiment you’ll be grabbing the relationship between mass and volume you’ll be placing the volume on the X axis and th
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!