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
Jet001 [13]
3 years ago
11

suggest two observations that you can make when Calcium reacts with water and write a balanced equation for the reaction of calc

ium with water
Chemistry
1 answer:
Kamila [148]3 years ago
8 0

• Bubbles of a colourless, odourless gas are evolved

• The solution turns red litmus blue

       Ca + 2H_2O→ Ca(OH)_2 + H_2

You might be interested in
A waterbed filled with water has the dimensions 8.5ft by 7.5ft by 9.5inches. Taking the density of water to be 1.00 g/cubic cent
Citrus2011 [14]
First, 1 foot = 30.48cm (12 inches x 2.54 cm/inch=30.48 cm). So, 8,5 ft = 8.5 x 30.48cc=259.08 cm, 7.5 ft = 7.5 x 30.48=228.6cm and 9.5/12=0.791ft x 30.48 =24.11cm. So, in cc, 259.08 x 228.6 x 24.11 = 1,427,931.3 cc. Since 1 cc of water = 1 gram then we have 1,427,931`grams or 1427. 931 kg x 2.2 lbs/kg = 3141 pounds of water or 1.57 tonnes of water so with this size of waterbed if  upstairs the house structure must be able to withstand this stress. 
3 0
3 years ago
Write the following numbers in standard notation, maintaining the same number of significant figures.
Alexxandr [17]

Answer:

6.104x10^2=610.4

9.5x10^3=9500

Explanation:

7 0
3 years ago
State whether the error introduced by each of the following problems would result in a high or a low value for the Cu recovery o
vampirchik [111]

Answer:

Low value for copper recovery

Explanation:

The percentage recovery is obtained from;

Percent recovery = amount of substance you actually collected / amount of substance you were supposed to collect × 100

Note that the fact that some of the copper nitrate solution splashed out of the beaker means that some amount copper has been lost from the system. This loss of copper leads to a lower value of copper recovered from solution.

5 0
2 years ago
Which statements correctly describe thermal energy in a block of ice, a glass of liquid water, and a container of steam?
DanielleElmas [232]

Answer:

Steam always has more thermal energy than ice.

Explanation:

6 0
3 years ago
Which statement accurately describes nonrenewable energy sources?
suter [353]

Answer:

a resource that cannot be replenished in a short period of time.

Explanation:

Nonrenewable energy sources take thousands to millions of years to replenish. hence the "nonrenewable".

5 0
3 years ago
Other questions:
  • What is the pressure, in atmospheres, of 6.0 grams of H2 gas if it has a volume of 73 liters when the temperature is 25 C?
    14·1 answer
  • Which of the following is not an example of a chemical change?
    14·1 answer
  • What is meant by "citing a source"?remembering where you found the materialnaming the source of the informationkeeping the note
    7·1 answer
  • A carpenter uses a saw to cut a wooden board into two different sized pieces. Which of the following physical properties is most
    10·2 answers
  • A sample of an unknown compound is vaporized at . The gas produced has a volume of at a pressure of , and it weighs . Assuming t
    10·1 answer
  • Balance this equation-<br> __P4+ __02 --&gt; __P2O3
    15·1 answer
  • Which statement is correct about the water cycle?
    14·1 answer
  • student conducted a simple experiment to explore heat transfer they constructed the closed system you see here a metal soda can
    6·1 answer
  • Which substance is most likely to dissolve in greater quantities in cold water
    5·2 answers
  • A solution is 12.5% Na3PO, by mass. How many grams of Na3PO4
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!