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
raketka [301]
3 years ago
15

A solid calcium metal reacts with molecular oxygen. WORD EQUATION = CHEMICAL EQUATION =

Chemistry
1 answer:
Ne4ueva [31]3 years ago
5 0
Word equation - calcium + oxygen -> calcium oxide
Chemical equation - Ca + O2 -> CaO2

Hope this helps!
You might be interested in
Eddie is performing an experiment. He asked the question what type of soil makes plants grow the fastest. He has four plants. He
Bezzdna [24]
Manipulated variable: the types of soil
Responding variable: how much t the plants grow
4 0
3 years ago
a closed flask of air (0.250 L) contains 5.00 "puffs" of particles. The pressure probe on the flask reads 93 kPa. A student uses
Sergio039 [100]

Answer: New pressure inside the flask would be 148.8 kPa.

Explanation: The combined gas law equation is given by:

PV=nRT

As the flask is a closed flask, so the volume remains constant. Temperature is constant also.

So, the relation between pressure and number of moles becomes

P=n\\or\\\frac{P}{n}=constant

\frac{P_1}{n_1}=\frac{P_2}{n_2}

  • Initial conditions:

P_1=93kPa\\n_1=5\text{ puffs}

  • Final conditions: When additional 3 puffs of air is added

P_2=?kPa\\n_2=8\text{ puffs}

Putting the values, in above equation, we get

\frac{93}{5}=\frac{P_2}{8}\\P_2=148.8kPa

3 0
2 years ago
____________ tautomers have a C=O and an additional C-H bond.
Roman55 [17]

Ch = sh = why and find the stuff

4 0
3 years ago
You need 455 ml of a 75% alcohol solution. on hand, you have a 25% alcohol mixture. you also have a 90% alcohol mixture. how muc
marishachu [46]
X ml - <span>25% alcohol mixture
y ml - </span><span>90% alcohol mixture

x+y = 455 

0.25x ml alcohol in </span>x ml of  25% alcohol mixture
0.9y ml alcohol in y ml of  90% alcohol mixture
0.75*455= 341.25 ml alcohol in 455 ml of  75% alcohol mixture

0.25x+0.9y=341.25 

System of equations:

x+y = 455 /*(-0.25) ------> -0.25x-0.25y = -0.25*455 
0.25x+0.9y=341.25

-0.25x-0.25y=-113.75
0.25x+0.9y=341.25    Add both equations

0.25x+0.9y-0.25x-0.25y=341.25-113.75
0.65y =227.5
y=227.5/0.65 = 350 ml  of  90% alcohol mixture

x+y=455
x+355=455
x=100 ml of  25% alcohol mixture

8 0
3 years ago
The distance between particles______when the temperature increases and
LekaFEV [45]

Answer:

increases

decreases

Explanation:

The distance between particles increases when the temperature increases and decreases when temperature decreases.

  • Temperature changes in a system causes the particle of such system to behave in different ways.
  • When particles gain heat energy as their temperature increases, they begin to move further apart.
  • As their temperature reduces they tend to coalesce.
5 0
3 years ago
Other questions:
  • How many mole are in 72.9g of HCI
    9·1 answer
  • A solution is prepared by dissolving ammonium sulfate in enough water to make of stock solution. A sample of this stock solution
    12·1 answer
  • How many moles of water are in 1.23 x 10^18 water molecules?
    13·2 answers
  • An element has two isotopes. 90% of the isotopes have a mass number of 20 amu, while 10% have a mass number of 22 amu. Calculate
    13·1 answer
  • Which of the following is the first stage of aerobic respiration?
    8·1 answer
  • Nuclear fusion is the process used to generate electricity in nuclear power plants. is the process in which a large nucleus spon
    5·2 answers
  • Why does water wet glass and not mercury​
    5·1 answer
  • Please help me on question #2 please please really need help due today at 9:00pm please
    12·1 answer
  • In the reoxidation of QH2 by purified ubiquinone-cytochrome c reductase (Complex III) from heart muscle, the overall stoichiomet
    11·1 answer
  • 4. Why does the metallic character of the alkaline earth metals increase as you go down the
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!