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
ohaa [14]
3 years ago
14

How are radar and an approaching siren different? How are they similar?

Chemistry
1 answer:
Irina-Kira [14]3 years ago
4 0

Answer:

b

Explanation:

You might be interested in
In the reaction C + O2 → CO2, 18 g of carbon react with oxygen to produce 72 g of carbon dioxide. What mass of oxygen would be n
artcher [175]
Stoichiomety:

1 moles of C + 1 mol of O2 = 1 mol of CO2

multiply each # of moles times the atomic molar mass of the compund to find the relation is weights

Atomic or molar weights:

C: 12 g/mol
O2: 2 * 16 g/mol = 32 g/mol
CO2 = 12 g/mol + 2* 16 g/mol = 44 g/mol

Stoichiometry:

12 g of C react with 32 g of O2 to produce 44 g of CO2

Then 18 g of C will react with: 18 * 32/ 12 g of Oxygen = 48 g of Oxygen

And the result will be 12 g of C + 48 g of O2 = 60 g of CO2.

You cannot obtain 72 g of CO2 from 18 g of C.

May be they just pretended that you use the law of consrvation of mass and say that you need 72 g - 18g = 54 g. But it violates the proportion of C and O2 in the CO2 and is not possible.
3 0
3 years ago
Read 2 more answers
What do you think about chemistry? define chemistry of the past ?​
Shalnov [3]

Answer: Most people think positively about chemistry. Chemistry has had a good impact on the world, such as the impact of renewable energy, clean water, and technology.

Explanation:

Hope this was helpful :)

5 0
3 years ago
Which term refers to the speed at which reactants are converted into products?
shutvik [7]

Answer:

activation energy hope this is right

6 0
3 years ago
Give the name and formula of the compound formed when a Mn2+ cation combines with a (PO4)3- anion
alex41 [277]
Sodium mn2 and po4  makes sodium
3 0
3 years ago
Consider sodium oxide, Na2O. Choose the best explanation for the subscript, 2, from the list provided. There are two atoms of ox
Shalnov [3]

There are two atoms of sodium and one atom of oxygen.

7 0
3 years ago
Read 2 more answers
Other questions:
  • A toaster transforms electrical energy into _____ energy and _____ energy. A. heat; light B. heat; kinetic C. heat; potential D.
    12·1 answer
  • How many moles are in 432 g of Ba(NO3)2?
    14·1 answer
  • One-step constrained-volume synthesis of silver decorated polymer colloids with antimicrobial and sensing properties,
    15·1 answer
  • The radii of the lithium and magnesium ions are 76 pm and 72 pm, respectively. which compound has stronger ionic attraction, lit
    10·1 answer
  • A) 2Fe(s) + O2(g) =>
    11·1 answer
  • I need to know what the summary of matter is helpppppp!!!!
    12·1 answer
  • What is polarization??​
    8·2 answers
  • Longitudinal weak or transverse ?
    13·2 answers
  • (3 x 104) (4 x 1023)
    13·2 answers
  • As you move upward, from level, in an energy pyramid, available energy ____.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!