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
Gwar [14]
3 years ago
15

Which two elements on the periodic table are in the same period?

Chemistry
1 answer:
emmainna [20.7K]3 years ago
6 0

Answer:

Platinum and Gold ig.

You might be interested in
Which energy changes in the enthalpy of solution are endothermic, and which are exothermic?
snow_tiger [21]
When energy is needed in order for the reaction to happen, then that reaction is known as endotermic. When the reaction has as a result energy then it is exotermic. An example of an endotermic reaction would be photosynthesis, for an exotermic: combustion.
8 0
3 years ago
Express this number in scientific notation 50000​
Kazeer [188]

Answer:

We write 50,000 in scientific notation,

it is written as 5 x 10⁴.

Hope it helps.

6 0
3 years ago
Read 2 more answers
52. In the following reaction, which are the Spectator ions? *
maks197457 [2]

Answer:

nitrate and sodium are spectator ions .The reactions that form an aqueous solution are often a spectator ions.

5 0
2 years ago
The correct answer for the addition of 5.8 g + 2.26g + 1.311g + 2 g is?
jeka94

Answer:

= 11.371g

Explanation:

Hope This Helps! :]

4 0
3 years ago
Nitroglycerin (c3h5n3o9) is a powerful explosive. its decomposition may be represented by 4c3h5n3o9 → 6n2 12co2 10h2o o2 this re
professor190 [17]
The balanced chemical reaction describing this decomposition is as follows:
<span>4c3h5n3o9 .............> 6N2 + 12CO2 +10H2O + O2

From the periodic table:
mass of oxygen = 16 grams
mass of nitrogen = 14 grams
mass of hydrogen = 1 gram
mass of carbon = 12 grams
Therefore:
mass of </span><span>C3H5N3O9 = 3(12) + 5(1) + 3(14) + 9(16) = 227 grams
mass of O2 = 2(16) = 32 grams

From the balanced chemical equation:
4(227) = 908 grams of </span>C3H5N3O9 produce 32 grams of O2. Therefore, to know the amount of oxygen produced from 4.5*10^2 grams <span>C3H5N3O9, all we need to do is cross multiplication as follows:
amount of oxygen = (4.5*10^2*32) / (908) = 15.859 grams</span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • A substance is seen to be brittle and does not conduct electricity. It is most likely A)a non-metal
    9·1 answer
  • If 4.5 mol of C6H8O7 react, how many moles of CO2 and Na3C6H5O7 will be produced?
    15·1 answer
  • Multiple Questions, Brainliest and 98 points to whoever answers all questions correctly
    10·2 answers
  • In the explosion of a hydrogen-filled balloon, 0.40 g of hydrogen reacted with 3.2 g of oxygen. How many grams of water vapor ar
    15·1 answer
  • According to the kinetic theory of gases
    15·1 answer
  • Which element(s) are not balanced in this equation?
    15·2 answers
  • What property has a higher value than silicon
    9·1 answer
  • How can you show your family you respect and / or care for them
    6·1 answer
  • using the balanced equation below how many grams of lead(||) sulfate would be produced from the complete reaction of 23.6 g lead
    5·1 answer
  • Describe how a metal less reactive than carbon can be reduced from its ore
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!