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
yaroslaw [1]
3 years ago
12

PLEASE HELP!! DIMENSIONAL ANALYSIS AND MOLE CONVERSIONS CHEMISTRY!!

Chemistry
1 answer:
Slav-nsk [51]3 years ago
7 0

Answer:

Moles of helium gas = 120

Explanation:

Given:

Volume of He = 30 L = 30,000 ml

Density of He = 0.016 g/ml

Find:

Moles of helium gas

Computation:

Mass = Volume of He x Density of He

Mass = 30,000 x 0.016

Mass = 480 gram

Moles of helium gas = 480 / 4

Moles of helium gas = 120

You might be interested in
2 science questions! 20 POINTS AND WILL REWARD BRAINLIEST!
serious [3.7K]
214, 84 Po ----Beta decay
3 0
3 years ago
Read 2 more answers
PLZ HELP ME What are the five shared characteristics of all living things?
djverab [1.8K]

Answer:

D

Explanation:

I believe the answer is D.

5 0
3 years ago
Measure out 2.87 moles of sodium chloride (Nacl) into a clean dry cup. ​
Anettt [7]

Answer: weigh is m = n × M = 2.87 mol × 58.44 g/mol

Explanation: mass = amount of substance × molar mass

M((NaCl) = 22.99 +35.45

6 0
3 years ago
Complete and balance the molecular equation, including the phases, for the reaction of aqueous potassium sulfate, k2so4, and aqu
Tju [1.3M]
The reaction between K₂SO₄(aq) and SrI₂(aq) produces KI(aq) and SrSO₄(s) as products. 

The reaction is 
K₂SO₄(aq) + SrI₂(aq) → KI(aq)+ SrSO₄(s) 

To balance the equation both side of the reaction should have same number of atoms in each element.

Right hand side of the reaction has 1 K, 1 I, 1 Sr, 1 S and 4 O atoms while 2 K, 2 I, 1 Sr,1 S and 4 O present in left hand side of the reaction. 
Hence, number of I atoms and number of K atoms are not balanced. 
To balance the K atoms we should add 2 before KI. Then I atoms will be 2 at the right hand side. 

Hence, the balanced reaction equation is
K₂SO₄(aq) + SrI₂(aq) → 2KI(aq)+ SrSO₄(s) 
3 0
3 years ago
Read 2 more answers
Can u help me with this
dolphi86 [110]

Answer:

c

Explanation:

the reason is because your a homosiejenenddj

8 0
2 years ago
Other questions:
  • which of the following correctly shows a prefix used in naming a binary molecular compound along with its corresponding number?
    8·2 answers
  • What is iridium iii phosphate monohydrate chemical formula
    9·2 answers
  • I'm lost....can anyone explain please?
    10·1 answer
  • The properties of several unknown solids were measured. Solid Melting point Other properties A >1000 °C does not conduct elec
    14·2 answers
  • Human offspring begin with 1 cell that contains 46 chromosomes. This is because each sperm cell contains _____ chromosomes and e
    15·1 answer
  • Question 3 (1 point)
    5·1 answer
  • Silicon is a metalloid element commonly found in Earth's crust. It helps form many different compounds, which have a variety of
    7·1 answer
  • Match each definition to the appropriate term.
    9·1 answer
  • the answer choices for all are shifts to the right, shifts to the left, and no change I need help plsssss
    5·1 answer
  • Element X is in group 2, and element Y is in group 7, of the periodic table. which ions will be present in the compound formed w
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!