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
WITCHER [35]
2 years ago
15

If you need 2.5 moles of Rb2Cr7, how many grams do you need?

Chemistry
1 answer:
BartSMP [9]2 years ago
5 0

Answer:

0

Explanation:

You might be interested in
A sample of nitrogen gas has the temperature drop from 250.°c to 150.°c at constant pressure. what is the final volume if the in
Leviafan [203]
Charles law gives the relationship between temperature of gas and volume of gas.
It states that for a fixed amount of gas, temperature is directly proportional to volume of gas.
V / T = k
where   V- volume , T - temperature and k - constant 
\frac{V1}{T1} =  \frac{V2}{T2}
parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation.
T1 = 250 °C + 273 = 523 K
T2 = 150 °C + 273 = 423 K
Substituting the values in the equation,

\frac{310 mL}{523 K} =  \frac{V}{423K}
V = 251 mL
the new volume is 251 mL 
6 0
3 years ago
What is the difference between Dalton’s and modern atomic theory
stira [4]

Answer:

Dalton says atoms of a given element are identical in mass and the modern one says atoms of a given element are identical in average mass. ... Modern theory says they atoms can be subdivided, created or destroyed by ordinay means.

hope this helps!

4 0
3 years ago
£<br> 5.1.4 Quiz: Hydrocarbons<br><br> What is the name of this molecule?
lisov135 [29]
£ is not a molecule. It is a currency. That is pounds sterling, used in the U.K.
3 0
3 years ago
Read 2 more answers
#1. Which of the following is a reasonable ground-state electron configuration? A.-1s21p62s22p63s2/ B. -1s22s22p63s23p64s24d8/ C
Sladkaya [172]
A ground state electron configuration follows the Aufbau Principle that states that electrons should be filled up in orbitals in increasing energy. In the given sequences, the right configuration is <span>1s2 2s2 2p6 3s2 3p6 4s2 3d8. The choice that conforms to this sequence is D. In 2) the possible confirmation that follows Aufbau's principle is D. </span>
6 0
3 years ago
Read 2 more answers
Enter the Ksp expression for the solid AB2 in terms of the molar solubility x. AB2 has a molar solubility of 3.72×10−4 M. What i
AlekseyPX

Answer:

2.06 × 10⁻¹⁰

Explanation:

Let's consider the solution of a generic compound AB₂.

AB₂(s) ⇄ A²⁺(aq) + 2B⁻(aq)

We can relate the molar solubility (S) with the solubility product constant (Kps) using an ICE chart.

      AB₂(s) ⇄ A²⁺(aq) + 2B⁻(aq)

I                      0              0

C                    +S            +2S

E                      S              2S

The solubility product constant is:

Kps = [A²⁺] × [B⁻]² = S × (2S)² = 4 × S³ = 4 × (3.72 × 10⁻⁴)³ = 2.06 × 10⁻¹⁰

5 0
3 years ago
Other questions:
  • At the end of mitosis the cells produced are identical to each other is it True or False
    15·1 answer
  • What is the percent by mass of carbon in acetone, c 3 h 6 o?
    6·2 answers
  • Please help me! This is too hard!?
    12·1 answer
  • Which statement is true about the elements present in a pure substance?
    12·2 answers
  • Question 8 of 10
    6·1 answer
  • Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid, HCl(aq), as
    14·1 answer
  • What is the elevation of hachure line A?<br><br> 125 feet<br> 75 feet<br> 100 feet<br> 50 feet
    13·2 answers
  • Can somebody answer this please
    15·1 answer
  • When mixing vinegar and baking soda a reaction occurs. What caused the bubbles in the reaction?
    11·2 answers
  • If you are given 96.0 grams of O2, how many grams of H20 are made?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!