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
valentinak56 [21]
3 years ago
14

When 2.35 g of potassium reacts with excess water, what mass of hydrogen gas is formed?

Chemistry
1 answer:
Butoxors [25]3 years ago
7 0

Answer:

hope this is correct

You might be interested in
C3H7-C(=O)-NH2 IUPAC NAME ?
Yuri [45]

Answer:

Amide

Explanation:

O=NH2 is the Amide group versus NH2, which is the amine group.

7 0
2 years ago
Read 2 more answers
An impure sample of table salt that weighed 0.8421 g, when dissolved in water and treated with excess AgNO3, formed 2.044 g of A
Lilit [14]

Answer:

99.24%.

Explanation:

  • NaCl reacted with AgNO₃ as in the balanced equation:

<em>NaCl + AgNO₃ → AgCl(↓) + NaNO₃,</em>

1.0 mol of NaCl reacts with 1.0 mol of AgNO₃ to produce 1.0 mol of AgCl and 1.0 mol of NaNO₃.

  • We need to calculate the no. of moles of AgCl produced:

no. of moles of AgCl = mass/molar mass = (2.044 g)/(143.32 g/mol) = 0.0143 mol.

  • Now, we can calculate the no. of moles of NaCl that can precipitated as AgCl (0.0143 mol), these moles represents the no. of moles of pure NaCl in the sample:

<em>using cross multiplication:</em>

1.0 mol of NaCl produce → 1.0 mol of AgCl, from the stichiometry.

∴ 0.0143 mol of NaCl produce → 0.0143 mol of AgCl.

  • Now, we can get the mass of puree NaCl in the sample:

mass of pure NaCl = (no. of moles of pure NaCl)(molar mass of NaCl) = (0.0143 mol)(58.44 g/mol) = 0.8357 g.

∴ The percentage of NaCl in the impure sample = [(mass of pure NaCl)/(mass of the impure sample)] x 100 = [(0.8357 g)/(0.8421 g)] x 100 = 99.24%.

4 0
3 years ago
How one atom undergoing fission can cause up to three other atoms to undergo fission.
mamaluj [8]

Answer:

In order to initiate most fission reactions, an atom is bombarded by a neutron to produce an unstable isotope, which undergoes fission. When neutrons are released during the fission process, they can initiate a chain reaction of continuous fission which sustains itself.

7 0
2 years ago
which of the following antibiotic products may cause a cross sensitivity reaction in patients who are allergic to penicillin?​
Dominik [7]

Answer:

Can you provide the options pls

Explanation:

3 0
3 years ago
Read 2 more answers
Calculate # of atoms in 46g of Na
makvit [3.9K]

21Explanation:BEACUSE I CAN

5 0
2 years ago
Other questions:
  • How to determine the actual mass of calcium carbonate you obtained
    11·1 answer
  • What is the pH of a 5.4 x 10-3 M HCl solution?<br>A. 2.3<br>B. 3.3<br>C. 3.7<br>D. 11.7​
    8·1 answer
  • which of the following would be a testable hypothesis for an experimet that compares the health of salmon raisedin fis farms to
    8·1 answer
  • Sean is moving heavy furniture by sliding it across the floor. he puts a blanket under Meath the furniture why did this help him
    9·1 answer
  • Why is specific heat capacity more useful then heat capacity when comparing two materials
    14·1 answer
  • Name the following ester molecule:
    9·1 answer
  • Why is methanol written as ch3oh instead of ch4o?​
    5·1 answer
  • What will be the result of the contraction of the universe?
    8·1 answer
  • How did old yellow die
    6·1 answer
  • How many calories of energy will 20 grams of carbohydrates provide if 1 gram provides 4 calories?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!