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
GenaCL600 [577]
3 years ago
9

At STP , how many molecules of nitrogen gas are in 2.24 L?

Chemistry
1 answer:
Oksanka [162]3 years ago
7 0

Explanation:

At STP ,2.24 L contain 0.1 mole of N²

<h2>So,No. of molecules of N2 = 6.022*10²²</h2>
You might be interested in
If a substance has a half life of 58 years and starts with 500 g radioactive, how much remains radioactive after 30 years?
Vilka [71]

Answer:

A = 349 g.

Explanation:

Hello there!

In this case, since the radioactive decay kinetic model is based on the first-order kinetics whose integrated rate law is:

A=Ao*exp(-kt)

We can firstly calculate the rate constant given the half-life as shown below:

k=\frac{ln(2)}{t_{1/2}} =\frac{ln(2)}{58year}=0.012year^{-1}

Therefore, we can next plug in the rate constant, elapsed time and initial mass of the radioactive to obtain:

A=500g*exp(-0.012year^{-1} *30year)\\\\A=349g

Regards!

5 0
3 years ago
How does acid affect limestone?
Andrej [43]

Answer:

It reacts by fizzing and wearing away/dissolving the rock.

Explanation:

7 0
3 years ago
Give the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by the element. rb
devlian [24]

Actually Rb or Rubidium in zero state has the following electron configuration:

<span>1s22s2</span><span>2p6</span><span>3s2</span><span>3p63d10</span><span>4s2</span><span>4p65s1</span>

 

However we can see that the ion has a 1 positive charge, which means that it lacks 1 electron, therefore the answer from the choices is:

<span>d. rb+: 1s22s22p63s23p64s23d104p6</span>
3 0
3 years ago
The atomic number of potassium is 19. How many electrons does this element have?
Vinvika [58]

Answer:

Potassium is an element that has 19 electrons

7 0
2 years ago
C3H8 is ________<br><br>A. unsaturated <br>B. saturated​
ELEN [110]
I believe it is saturated!

I hope this helps. Please mark me the Brainliest, it’s not necessary but I put time and effort into every answer and I would appreciate it greatly. Have a great day, stay safe and stay healthy ! :)
5 0
3 years ago
Other questions:
  • The substances are placed in separate containers at room temperature, and each container is gradually cooled. Which of these sub
    13·2 answers
  • How many bromine atoms are present in 39.0 g of ch2br2?
    9·1 answer
  • 1. Determine the molarity given 0.6762 mol KOH and a volume of<br> 500.00 mL.
    12·1 answer
  • When a metal and____ bond, they do not share electrons.
    5·1 answer
  • B) Name three substances which can undergo sublimation and deposition respectively​
    6·1 answer
  • From previous experiments, this chemical reaction is known to absorb of energy. The position of the piston is monitored, and it
    6·1 answer
  • Help me pleaseeeee, if you do tyyy :)
    7·1 answer
  • What are the oxidation numbers for groups 1-18 (skip groups 3-12)
    6·2 answers
  • 6. Alkali metals, alkaline earth metals, and halogens
    7·2 answers
  • 3 Apply Use context clues to write your own definitions for the words definite and occupy.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!