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
QveST [7]
3 years ago
8

Number the steps for balancing equations:

Chemistry
2 answers:
Novosadov [1.4K]3 years ago
7 0

Answer:

3,4,2,1

Explanation:

shtirl [24]3 years ago
6 0

Answer:

The correct answer will be 3,4,2,1

Explanation:

You might be interested in
1. Why is it necessary to equalize the pressure(i.e, have the water level the same in each tube) before taking a volume reading?
Anna11 [10]

Answer:

If you contact water with a gas at a certain temperature and (partial) pressure, the concentration of the gas in the water will reach an equilibrium ('saturation') according to Henry's law.

Explanation:

This means: if you increase the pressure (e.g. by keeping the vial closed), the CO2 concentration will increase. So it simply depends what concentration you need for your assay: 'CO2-saturated' water at low pressure or 'CO2-saturated' water at high pressure.

3 0
2 years ago
Which one of the following represents a decrease in entropy?
Leni [432]

Answer:

D

Explanation:

There are principally three states of matter. These are the solid, liquid and gaseous states. The gaseous state has the highest degree of disorderliness as gas particles can move randomly while the solid state has the highest level of compactness.

Hence, we need to be adequately fed with information as regards the phase change to know if entropy has decreased or increased.

A. is wrong

Evaporation is a change of state to the gaseous state meaning there is an increased entropy.

B. is wrong

Sublimation is a change of state which means a solid substance like iodine or naphthalene changes its state directly to the gaseous state. There is an increased entropy here too.

C is wrong

Melting of ice means going from ice block to liquid water. This is synonymous to going from the solid state to the liquid state which is an increased entropy

D is correct

Condensation involves going from the gaseous state to the liquid state. This means going from a less ordered state to a more ordered state. This is accompanied by an entropy decrease.

E is wrong

While there are some processes that increase entropy, we also have some process that decrease entropy.

7 0
3 years ago
Equation is balanced already
mojhsa [17]

Answer:

1.) 13 g C₄H₁₀

2.) 41 g CO₂

Explanation:

To find the mass of propane (C₄H₁₀) and carbon dioxide (CO₂), you need to (1) convert mass O₂ to moles O₂ (via molar mass), then (2) convert moles O₂ to moles C₄H₁₀/CO₂ (via mole-to-mole ratio from equation coefficients), and then (3) convert moles C₄H₁₀/CO₂ to mass C₄H₁₀/CO₂ (via molar mass). It is important to arrange the ratios in a way that allows for the cancellation of units. The final answers should have 2 sig figs to match the sig figs of the given value.

Molar Mass (C₄H₁₀): 4(12.011 g/mol) + 10(1.008 g/mol)

Molar Mass (C₄H₁₀): 58.124 g/mol

Molar Mass (CO₂): 12.011 g/mol + 2(15.998 g/mol)

Molar Mass (CO₂): 44.007 g/mol

Molar Mass (O₂): 2(15.998 g/mol)

Molar Mass (O₂): 31.996 g/mol

2 C₄H₁₀ + 13 O₂ ----> 8 CO₂ + 10 H₂O

 48 g O₂             1 mole             2 moles C₄H₁₀            58.124 g
---------------  x  -----------------  x  -------------------------- x  ------------------  =  
                         31.996 g              13 moles O₂               1 mole

=  13 g C₄H₁₀

 48 g O₂             1 mole               8 moles CO₂            44.007 g
---------------  x  -----------------  x  -------------------------- x  ------------------  =  
                         31.996 g              13 moles O₂               1 mole

=  41 g CO₂

6 0
1 year ago
Please help its urgent
mrs_skeptik [129]

Answer:

C

Explanation:

I picked C because the plant is interacting with the sun which is a nonliving part of the environment.

A, B and D are wrong because seaweed, horses, and trees are living things.

8 0
2 years ago
Read 2 more answers
Suppose you wanted to make 100 grams of water. A. What is the molar mass of water (H2O)? B. How many moles of water are in 100 g
Gemiola [76]
I need to answer more
4 0
3 years ago
Read 2 more answers
Other questions:
  • A sample of 5 moles of gas is held at a constant temperature of 500 k inside a container with a volume of 0.25 l. What pressure
    10·1 answer
  • A hot air balloon is filled with of an ideal gas on a cool morning ( The air is heated to What is the volume of the air in the b
    7·1 answer
  • What is the empirical formula for a compound that contains 12.62% li, 29.17% s, and 58.21% o?
    6·1 answer
  • The darkest part of the moon’s shadow is called the penumbra?
    12·2 answers
  • How much water would I need to add to 500 mL of a 2.4 M KCl solution to make a 1.0 M solution?
    8·1 answer
  • What does the term chemistry mean?
    8·1 answer
  • How many molecules are in 3.40L of H2O vapor at STP?*
    15·1 answer
  • 31. Use the equation given below to answer the following question: If 755 kJ of heat was absorbed, what mass of carbon dioxide r
    8·1 answer
  • Photosynthesis makes (__________) and (____________) for an ecosystem.
    12·1 answer
  • How do you use chromatography to separate mixtures
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!