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
GalinKa [24]
3 years ago
15

Air should be classified as:

Chemistry
1 answer:
Alex777 [14]3 years ago
6 0

Answer:

element

Explanation:

it is use full for you thanks

You might be interested in
what+is+the+theoretical+yield+of+ammonia(in+grams)+of+19.25+grams+of+nitrogen+gas+and+11.35+grams+of+hydrogen+gas+are+allowed+to
kondor19780726 [428]
We are given the amount of Nitrogen gas and hydrogen gas reacted to form ammonia:

N2 = 19.25 grams
H2 = 11.35 grams

Set-up a balanced chemical equation:

N2 + 3H2 ==> 2NH3

The theoretical amount of ammonia that will be produced from the given amounts is:

First, we need to determine the limiting reactant to serve as our basis for calculation.

number of moles / stoichiometric ratio 

N2 = 19.25  g/ 28 g/mol / 1 = 0.6875
H2 = 11.35 g/ 2 g/mol /3 = 1.89 

The limiting reactant is N2.

0.6875 moles N2 * (2 NH3/ 1 N2) * 17 g/mol NH3

The amount of NH3 produced is 23.375 grams of ammonia. <span />
7 0
2 years ago
A rectangular prism of volume 84 cm 3 has a mass of 760 g. What is the density of the rectangular prism? 5.8 g•cm 3 9.0 g/cm 3 6
Fiesta28 [93]

Answer:

9.0 g/cm³

Explanation:

Density can be computed with the formula:

D=\dfrac{M}{V}

Where:

D = Density

M = Mass

V = Volume

In your problem we are given:

84 cm³ = volume

760 g = mass

So we just plug in our given into the formula:

D=\dfrac{M}{V}

D=\dfrac{760g}{84cm^{3}}

D=9.05g/cm^{3}

The answer would then be:

9.0 g/cm³

3 0
3 years ago
Pls i need help with this
gregori [183]

Answer:

C

Explanation:

A physical change is one in which no new substance is formed. The moistening of food by saliva is purely a physical change because no new substance is formed in the process.

A chemical change leads to the formation of a new substance. The action of the enzyme converts starch into sugar which means that a new substance is formed. This is a chemical change.

5 0
2 years ago
What’s the answer????
dezoksy [38]
Should be , b
. Not positive tho
8 0
2 years ago
Please help :)
eimsori [14]
Distance and period of time
6 0
3 years ago
Other questions:
  • Which absolute magnitude rating would be the dullest?<br><br> -6<br><br> 0<br><br> +2<br><br> -1
    12·1 answer
  • What phase of matter has particles that are held together but can flow past each other and takes the shape of a container, filli
    15·2 answers
  • Sedimentary rocks formed from the remains of once-living things are
    10·2 answers
  • A reaction occurs when solid X is placed into solution Y. As a result, the temperature of the new solution increases by 3°C.
    14·1 answer
  • What are the coefficients needed to balance the equation for the combustion of
    12·2 answers
  • Electron configuration of calcium
    15·1 answer
  • Poem about how ones lifestyle can affect the circulatory and respiratory system
    14·2 answers
  • The equilibrium constant, Kc, for the following reaction is 1.55 at 667 K.
    8·1 answer
  • Mixture of acid and base
    11·1 answer
  • Help please it’s due in 3 minutes
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!