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
sasho [114]
4 years ago
7

Chemist determined by measurements that 0.015 moles of nickel participated in a chemical reaction. Calculate the mass of nickel

that participated in the chemical reaction. Round your answer to 2 significant digits.
Chemistry
1 answer:
san4es73 [151]4 years ago
5 0

Mass of Ni = 0.015 mol Ni × (58.693 g Ni/1 mol Ni) = 0.88 g Ni

You might be interested in
4. A sign in a town gives the speed limit at 50.00 km/hr. What is this speed in cm/sec?​
ivanzaharov [21]

sorry but if you are looking for an answer I don't know one. :(

3 0
3 years ago
The pH of a 1.0M solution of butanoic acid HC4H7O2 is measured to be 2.41. Calculate the acid dissociation constant Ka of butano
Lubov Fominskaja [6]

Answer:

Ka = 1.52 E-5

Explanation:

  • CH3-(CH2)2-COOH ↔ CH3(CH2)2COO-  + H3O+

⇒ Ka = [H3O+][CH3)CH2)2COO-] / [CH3(CH2)2COOH]

mass balance:

⇒<em> C</em> CH3(CH2)2COOH = [CH3(CH2)2COO-] + [CH3(CH2)2COOH] = 1.0 M

charge balance:

⇒ [H3O+] = [CH3(CH2)2COO-]

⇒ Ka = [H3O+]²/(1 - [H3O+])

∴ pH = 2.41 = - Log [H3O+]

⇒ [H3O+] = 3.89 E-3 M

⇒ Ka = (3.89 E-3)² / ( 1 - 3.89 E-3 )

⇒ Ka = 1.519 E-5

3 0
3 years ago
2. What is the change in the atomic number when an atom emits an alpha particle? (1 point)
lesantik [10]

it is decreased by 2


5 0
4 years ago
The rate of evaporation is affected by all of the following except
lidiya [134]
Hello there.

<span>The rate of evaporation is affected by all of the following except

Answer: </span><span>B. the humidity. 
</span>
8 0
4 years ago
Read 2 more answers
Pt2 science......<br><br> Select correct answer ♡!
Dafna1 [17]
E should be correct.

The color may change, precipitation may occur, bubbles may form, gas forms, and the temperature changes.

Mark if correct please!
6 0
3 years ago
Other questions:
  • The three beakers shown below contain solutions of [cof6]3–, [co(nh3)6]3+, and [co(cn)6]3–. based on the colors of the three sol
    11·1 answer
  • Imagine an object falling to the Earth. Which of the following most accurately describes the motion of that object?
    6·2 answers
  • Aqueous hydrochloric acid reacts with solid sodium hydroxide to produce aqueous sodium chloride and liquid water . If of sodium
    14·1 answer
  • What is the name for the process of recycling materials that make up the earths crust and mantle
    5·1 answer
  • Which statement describes how heat flows from the coffee to the part of the spoon in the coffee?
    7·2 answers
  • Which of the following models represents an atom that is more reactive than the
    6·1 answer
  • Which term describes this molecular shape?
    12·2 answers
  • 2. Iron reacts with superheated steam to form hydrogen gas and the oxide Fe3O4. Calculate the number of moles of hydrogen produc
    15·1 answer
  • What happens to Earth’s temperature as cloud cover increases? A. The temperature increases. B. The temperature decreases. C. The
    10·2 answers
  • Consider the intermediate chemical reactions. 2 equations. First: upper C a (s) plus upper C upper O subscript 2 (g) plus one ha
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!