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
arlik [135]
3 years ago
7

Please help me complete the following table

Chemistry
1 answer:
Tasya [4]3 years ago
5 0

Answer:

1.) Atomic No. 19

No. of proton 19

No. of electron 19

symbol 39K19

2.) Atomic no. 26

Mass No. 56

No. of proton 26

Symbol 56Fe26

You might be interested in
In the combined gas law, if the volume is decreased, what happens to the temperature if pressure remains constant?
Flura [38]

The correct answer is A. In the combined gas law, if the volume is decreased and the pressure is constant, then the temperature decreases.

 <span>P1V1/ T1 = P2V2 / T2</span>

 <span>Assume the volume decrease by half; V2 = V1/2</span>

 <span>P1V1/ T1 = P2V1 /2 T2</span>

 <span>Cancelling terms,</span>

 <span>1/T1 = 1/2 T2</span>

T2 = T1/2

 <span>Thus, the temperature decreased.</span>

8 0
3 years ago
Help please first person to get it right gets my old Netflix account​
spin [16.1K]
Butterflies are cold-blooded and need the light from the sun to warm the muscles they use to fly. Not only do butterflies like the sun, the plants the they thrive on need full direct sun. Most plants need at least 8 hours of sunlight to bloom properly and provide enough nectar.
7 0
3 years ago
Read 2 more answers
A. What is the chemical reaction between hydrogen and sulfur?
DanielleElmas [232]

Answer & Explanation:

At high temperatures or in the presence of catalysts, sulfur dioxide reacts with hydrogen sulfide to form elemental sulfur and water. This reaction is exploited in the Claus process, an important industrial method to dispose of hydrogen sulfide.

6 0
3 years ago
37.9 grams of an unknown substance undergoes a temperature increase of
jenyasd209 [6]

Answer:

1.023 J / g °C

Explanation:

m = 37.9 grams

ΔT = 25.0*C

H = 969 J

c = ?

The equation relating these equation is;

H = mcΔT

making c subject of formulae;

c = H / mΔT

c = 969 J / (37.9 g * 25.0*C)

Upon solving;

c = 1.023 J / g °C

4 0
3 years ago
Which equation is balanced?
Evgen [1.6K]

Answer:

A I think

Explanation:

im not sure so do with that what you will

8 0
3 years ago
Other questions:
  • When potassium bromate (kbro3 ) is heated, it decomposes into potassium bromide and a gas that supports the combustion of a glow
    8·1 answer
  • Through the process of photosynthesis, _ energy is transformed into _ energy
    10·2 answers
  • Quantum numbers arise naturally from the mathematics used to describe the possible states of an electron in an atom. The four qu
    11·1 answer
  • How many electrons in an atom can have each of the following quantum number or sublevel designations?
    5·1 answer
  • why is cobalt placed before nickel on the periodic table of elements even though it has a higher average atomic mass than nickel
    12·2 answers
  • Arrange the following atoms in order of increasing size (radius).
    11·1 answer
  • PLEASE HELP What's the mass in grams of 0.442 moles of calcium bromide, CaBr2? The atomic
    11·1 answer
  • Name three instructions that DNA provides to a cell
    11·2 answers
  • Calcular las fracciones molares de los componentes de una disolución formada por: 250 g de agua, 50 g de ácido acético y 25 g de
    6·1 answer
  • WHaty are the Chemical properties of Oxygen?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!