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
EleoNora [17]
3 years ago
14

What is x, If the equationis 7+9-4÷12

Chemistry
1 answer:
jarptica [38.1K]3 years ago
7 0
47/3 which could be simplified to 15.6
You might be interested in
What r rocks made of
Iteru [2.4K]
Most are made from crystals and minerals.
6 0
3 years ago
Read 2 more answers
The amount of energy required to heat water for a 10-minute shower (50 gallons) is 2.2125 kJ. How many calories is this?
Zigmanuir [339]
From the problem statement, this is a conversion problem. We are asked to convert from units of kilojoules to units of calories. To do this, we need a conversion factor which would relate the different units involved. We either multiply or divide this certain value to the original measurement depending on what is asked. From literature, we will find that 1 kilojoule is equal to 239 calories. We do as follows:
<span>
2.2125 kJ ( 239 calories / 1 kJ ) = 528.79 calories
</span><span>
</span>
6 0
4 years ago
(b) Briefly explain how the presence of charged ions in ionic solids such as NaCl(s) helps to explain why NaCl(s) is a soluble i
bonufazy [111]

Answer:

-The stronger electrostatic forces of attraction between the oppositely charged ions causes the Sodium chloride to break apart until it completely dissolves in the water.

Explanation:

-Sodium Chloride has positively charged sodium ions, Na^+ and negatively charged chloride ions, Cl^-.

-Water on the other hand has positively charged Hydrogen ions,H^+ and negatively charged Oxygen ions, O^{2-} due to the difference in electroneganivity.

-When dissolved in water, the positively charged sodium ions will attract the partially negatively charged oxygen ions. The negatively charged chloride ions will be attracted to the positively charged hydrogen ions in the reaction as below:

NaCl+H_2O->NaOH+HCL\\\\Na^++Cl^-+H_2O->Na^++(OH)^-+H^++Cl^-

6 0
3 years ago
That which flows onward uniformly
Maurinko [17]

Answer:

time

Explanation:

3 0
3 years ago
What is the main source of energy for the water cycle.
viktelen [127]

Answer:

The main source of energy is the sun. The sun has a big part in the water cycle because it turns the water into water vapor. This cause the water cycle to start over again once it rains. Therefore, making the sun ne of the biggest parts in the water cycle.

7 0
2 years ago
Other questions:
  • Machines are never 100 percent efficient because some work is used to overcome friction and inertia. True False
    12·2 answers
  • In general, for a gas at a constant volume, _____.
    14·1 answer
  • By mistake, you added salt instead of sugar to the<br> oil. How can you remove the salt?
    10·2 answers
  • \"Moving down group 2A (Alkaline Earth Metals), which element has the largest first ionization energy?\" Is the answer to this:
    13·1 answer
  • Which acid and base neutralize to give potassium chloride salt? hf(aq) and kcl(aq) hcl(aq) and kcl(aq) hf(aq) and koh(aq) none o
    15·1 answer
  • A mass of 2.20 g carbon monoxide is reacted with 4.86 g hydrogen to form methanol.CO(g) + 2 H2(g) → CH3OH(g)The reaction is perf
    11·1 answer
  • A sample of gas at 15 atmospheres and 445 K is cooled to 250 K. What pressure will the gas be under after it is cooled? Round to
    11·1 answer
  • A material that is not a mixture; has the same properties all the way through
    6·1 answer
  • How many moles of propane<br> react when 294 g of CO2 form?<br><br> C3H8 +502 → 3CO₂ + 4H₂O
    13·1 answer
  • How do I do this partial pressure problem? (AP CHEM)
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!