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
Luba_88 [7]
2 years ago
14

Please tell me what the answer is please

Chemistry
2 answers:
xenn [34]2 years ago
7 0

Answer:

2

Explanation:

andriy [413]2 years ago
5 0

Answer:

The brain

Explanation:

You might be interested in
3. How does this difference in language relate to our propensity to save?
stich3 [128]

Answer:

If you speak a futureless language, you will speak about time identically meaning you will feel as they are identical, it increases your propensity to save.

Explanation:

hope this helps you :)

8 0
4 years ago
When sodium is put in water, the metal floats on the surface and reacts to form sodium
mrs_skeptik [129]

Answer: Sodium also floats on the surface, but enough heat is given off to melt the sodium (sodium has a lower melting point than lithium and the reaction produces heat faster) and it melts almost at once to form a small silvery ball that dashes around the surface.

Explanation:

8 0
3 years ago
Read 2 more answers
Question 2
andrezito [222]

Answer:

A.  Peroxide breaking down into water and oxygen

Explanation:

Generally when it comes to changes, there are physical and chemical changes. In physical changes, there are no new substances been formed, however in chemical change new substances are formed.

A.  Peroxide breaking down into water and oxygen

This is a chemical change.

B . Bubbles forming when a pot of water is heated

This is a physical change

C. A pair of jeans soaked in water drying after hanging outside

This is a physical change

D . A block of ice decreasing in size due to a change in temperature

This is a physical change.

Only option A is different from the rest,hence this is the answer.

3 0
3 years ago
N2(g) + 3H2(g) → 2NH3(g) How many grams of N2 are required to produce 240.0g NH3?
just olya [345]

Answer:

\large \boxed{\text{197.4 g}}

Explanation:

We will need a chemical equation with masses and molar masses, so, let's gather all the information in one place.

Mᵣ:     28.01               17.03

            N₂ + 3H₂ ⟶ 2NH₃

m/g:                          240.0

(a) Moles of NH₃

\text{Moles of NH}_{3} = \text{240.0 g NH}_{3}\times \dfrac{\text{1 mol NH}_{3}}{\text{17.03 g NH}_{3}}= \text{14.09 mol NH}_{3}

(b) Moles of N₂

\text{Moles of N$_{2}$} = \text{14.09 mol NH}_{3} \times \dfrac{\text{1 mol N$_{2}$}}{\text{2 mol NH}_{3}} = \text{7.046 mol N$_{2}$}

(c) Mass of N₂

\text{Mass of N$_{2}$} =\text{7.046 mol N$_{2}$} \times \dfrac{\text{28.01 g N$_{2}$}}{\text{1 mol N$_{2}$}} = \textbf{197.4 g N$_{2}$}\\\\\text{The reaction requires $\large \boxed{\textbf{197.4 g}}$ of N$_{2}$}

7 0
3 years ago
Read 2 more answers
Which organism in a food web would be best described as a recycler?
Anika [276]

C,

takes dead things, makes them into other things

7 0
3 years ago
Other questions:
  • What is the total amount of matter in an ecosystem doing? always changing always increasing always decreasing remaining the same
    8·1 answer
  • Write the equilibrium-constant expression for the reactionA(s)+3B(l)↽−−⇀2C(aq)+D(aq)A(s)+3B(l)↽−−⇀2C(aq)+D(aq)in terms of [A], [
    7·1 answer
  • A certain element consists of two stable isotopes. the first has a mass of 68.9 amu and a percent natural abundance of 60.4 %. t
    12·1 answer
  • What accident led percy julian to discover the method to separate progesterone from soybean oil?
    12·1 answer
  • What is the volume of 80.0 g of ether if the density of ether is 0.70 g/mL
    12·1 answer
  • Example of a stimulas and response in a organism
    11·1 answer
  • How do alpha particles compare to gamma rays?
    8·2 answers
  • What material would be safest to use as an insulator to cover electrical wires?
    14·2 answers
  • 2.Chromosomes are____
    6·2 answers
  • If you burn a nut the same size as the cheeseball, would you get the same
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!