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
PolarNik [594]
3 years ago
9

Balance the following chemical equations

Chemistry
1 answer:
grigory [225]3 years ago
7 0

Answer:

1. 2,3,2

2. 4,5,2

3. 3,1,1

Explanation:

You might be interested in
Plz help! The best answer will get brainliest!<br><br> What is the net force acting on an object?
Jet001 [13]

Answer:

Gravity

Explanation:

3 0
3 years ago
Read 2 more answers
Five different substances are given to you to be dissolved in water. Which substances are most likely to undergo dissolution in
9966 [12]

Answer:

NaF and KBr

Explanation:

These two substances contain pure ionic bonds. LiI is a covalent compound because of the Large polarizing power of Li and the high polarizability of I(Fajan's rules). The other compounds mentioned are organic compounds. They are not soluble in water at all.

7 0
4 years ago
A 1300 mL sample of gas with a molar mass of 71.0 g/mol at STP has what density?
Blizzard [7]

Answer:

0.055g/mL

Explanation:

Data obtained from the question include:

Molar Mass of the gass sample = 71g/mol

Volume of the gas sample = 1300 mL

Density =?

The density of a substance is simply mass per unit volume. It is represented mathematically as:

Density = Mass /volume.

With the above equation, we can easily obtain the density of sample of gas as illustrated below:

Density = 71g / 1300 mL

Density = 0.055g/mL

Therefore, the density of the gas sample is 0.055g/mL

6 0
3 years ago
A piece of unknown metal weighs 348g. When the metal piece absorbs 6.64kj of heat , its temperature increases from 24.4C to 43.6
Morgarella [4.7K]

Answer:

This metal could be the aluminium with a specific heat of H = 993 \frac{J}{kgC}

Explanation:

A pie of unknown metal presents a mass (M) of 348 g. This metal is heated using energy (E) of 6.64 kJ and the temperature increases from T1 =24.4 to T2 =43.6°C. We can calculate the specific heat (H) of this metal as follows

H = \frac{E}{M*(T2-T1)}

We can replace previously presented data in this equation. After simplifying and converting to adequated units, we found that

H = \frac{6640 J}{0.348 Kg*(43.6-24.4) C} =\frac{6640 J}{6.686 KgC}

Finally, the specific heat of this metal is

H = 993 \frac{J}{kgC}

The aluminium could be the metal, its specific heat is similar to that found in this problem.

Finally,  we can conclude that this metal could be the aluminium with a specific heat of H = 993 \frac{J}{kgC}

7 0
3 years ago
Which property of metals allows aluminum to be flattened into thin sheets of aluminum foil?
Gnoma [55]

Answer:

malleability

Explanation:

3 0
3 years ago
Other questions:
  • Which of these phrases accurately describe disproportionation? Check all that apply. A single compound reacts with itself. A sin
    11·2 answers
  • Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb of energy
    7·1 answer
  • Carbon-14 is the typical radioisotope used to date materials; however it has limitation to 40000 years a scientist who wants to
    5·1 answer
  • A solid with a low melting point is most likely
    14·2 answers
  • Write 2 difference between physical and chemical change. write an example in which both take place​
    10·2 answers
  • Which of the following are not phases of matter?
    10·2 answers
  • Describe how light is emitted from an atom. A) As protons absorb energy they travel from the nucleus through the atom emitting l
    6·1 answer
  • What is the mass in grams of 7.5 mol of C8H18?
    9·1 answer
  • In leaves, the conducting tissues are found in the
    10·1 answer
  • The molar heat of fusion of gold is 12.550 kJ mol–1. At its melting point, how much mass of melted gold must solidify to release
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!