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
Zanzabum
3 years ago
8

Calculate the volume of 2.5×10-4 moles of h2

Chemistry
1 answer:
sattari [20]3 years ago
3 0
At STP : volume is 22.4 L

1 mole H₂ -------------> 22.4 L
2.5 x 10⁻⁴ moles -----> ?

v = 2.5 x 10⁻⁴ * 22.4 / 1

v = 
You might be interested in
What two things are a included when describing force
galben [10]
Are there answer choices? You can describe force many ways.

8 0
3 years ago
Read 2 more answers
Question 3
harina [27]

Answer: 0.118M

Explanation:

The formula for molarity is: M=\frac{mol solute}{L solution}

First, we need to find the number of moles of NaCl.

2.70gNaCl*\frac{1molNaCl}{58.44gNaCl} =0.05molNaCl

Next, we must convert millimeters to liters. We can do that by dividing the number of mL by 1000.

\frac{425mL}{1000} =0.425L

Now we have our needed data! All we need to do now is plug in our data to the molarity formula.

M=\frac{0.05mol}{0.425L} =0.118M

I hope this helps! Pls mark brainliest!! :)

4 0
2 years ago
650.J is the same amount of energy as? <br>2720cal<br>1550cal<br>650.cal<br>2.72cal
Oksi-84 [34.3K]

<u>Ans: 650 J = 155 calories</u>


<u>Given:</u>

Energy in joules = 650 J

<u>To determine:</u>

The energy in calories

<u>Explanation:</u>

1 joule = 0.2388 calories

Therefore, 650 joules = 0.2388 calories * 650 J/1 J = 155 calories

4 0
4 years ago
Read 2 more answers
Reaction rates are affected by how often the particles collide<br><br> true<br><br> false
SIZIF [17.4K]
This is true.

The reaction rates are affected by how often the particles collide.
4 0
4 years ago
Read 2 more answers
Dalton's Atomic Model
olga_2 [115]

Answer:

A theory of chemical combination, first stated by John Dalton in 1803. It involves the following postulates: (1) Elements consist of indivisible small particles (atoms). (2) All atoms of the same element are identical; different elements have different types of atom. (3) Atoms can neither be created nor destroyed. Based on all his observations, Dalton proposed his model of an atom. It is often referred to as the billiard ball model. He defined an atom to be a ball-like structure, as the concepts of atomic nucleus and electrons were unknown at the time.

John Dalton developed a crude method for measuring the masses of the elements in a compound. His law of multiple proportions states that when two elements form more than one compound, masses of one element that combine with a fixed mass of the other are in a ratio of small whole numbers.

Explanation: Sup. Hope dis helps u bro

7 0
3 years ago
Other questions:
  • Which layer of the epidermis is most actively involved in replacing exfoliated skin cells?
    11·2 answers
  • What is the chemical formula
    13·2 answers
  • What fact about elements would help explain why two elements would bond with the same element in the same proportion?
    8·1 answer
  • How much heat is absorbed during production of 136 g of NO by the combination of nitrogen and oxygen?
    10·1 answer
  • The rate of the reaction is ?
    10·2 answers
  • What is the percent yield for a reaction if the theoretical yield of Fe2(SO4) is 33.14 g and the
    13·1 answer
  • Which sentence describes a characteristic of matter
    5·1 answer
  • Consider the reaction when aqueous solutions of copper(ii) nitrate and nickel(ii) chloride are combined.
    9·1 answer
  • A simple circuit with a battery connected to a buzzer by electrical wires is placed on a table. When the buzzer sounds, the tabl
    11·1 answer
  • What is the general formula for a straight-chain alkane?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!