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
gizmo_the_mogwai [7]
3 years ago
15

Please give just give me the first column of answers! I can do the rest. Just can’t find any.

Chemistry
1 answer:
Naily [24]3 years ago
7 0

Answer:

h20

Explanation:

You might be interested in
A photon of light possesses 5 x 10^-19 J of energy. Calculate its frequency
saveliy_v [14]

Answer:

The frequency of photon is 0.75×10¹⁵ s⁻¹.

Explanation:

Given data:

Energy of photon = 5×10⁻¹⁹ J

Frequency of photon = ?

Solution:

Formula;

E = hf

h = planck's constant = 6.63×10⁻³⁴ Js

5×10⁻¹⁹ J =  6.63×10⁻³⁴ Js ×f

f =  5×10⁻¹⁹ J / 6.63×10⁻³⁴ Js

f = 0.75×10¹⁵ s⁻¹

The frequency of photon is 0.75×10¹⁵ s⁻¹.

4 0
3 years ago
Where is the atmosephere the most dence
likoan [24]
The Earths Surface, it’s also known as the troposphere also dense* lol
8 0
3 years ago
Read 2 more answers
Formation of magnesium chloride​
Shkiper50 [21]

-Pure magnesium is commonly made by separating it from seawater. This process is known as electrolysis. The liquid magnesium formed is cooled into convenient blocks of metal known as ingots. The chlorine gas is recycled to form hydrochloric acid for the production of more magnesium chloride.

5 0
3 years ago
A lab experiment shows: merge a litmus paper in a
ddd [48]

Answer:

2.

Explanation:

When you put the paper in a solution, it will turn blue if it is basic, or red if it is acidic. If it does not change color, it is fairly neutral.

6 0
3 years ago
One gram of alum, KAl(SO4)2.12H2O, contains 1.3 × 1021 Al atoms. How many oxygen atoms are contained in 1.0 g alum?
Roman55 [17]

From the chemical formula, 1 formula unit of KAl (SO4)2.12H2O encompasses 1 atom of Al = 4 * 2 atoms of O in KAl (SO4)2 + 12 atoms of O in 12H2O which is equal to 20 atoms of O.

So, if you have 1.3 × 10^21 Al atoms, you have 20 * 1.3 × 10^21 O atoms will now be equal to 2.6 * 10^22 atoms of O.

6 0
3 years ago
Read 2 more answers
Other questions:
  • How to find valence electrons?
    9·2 answers
  • 18. When a chemical reaction takes place in an open system, matter_____.
    13·2 answers
  • The ka of hf is 6.8 x 10-4. what is the ph of a 0.35 m solution of hf?
    10·1 answer
  • What family is copper ​
    7·2 answers
  • Diborane (B2H6) is a gas at room temperature that forms explosive mixtures with air. It reacts with oxygen according to the foll
    6·1 answer
  • When 2 molecules collide, what happens
    13·1 answer
  • Which of the following are considered physical changes?
    13·1 answer
  • True or false
    10·1 answer
  • What is the role of con entrated sulfuric acid in Molisch Regeants test
    14·1 answer
  • What is true of both galvanic and electrolytic cells?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!