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
blondinia [14]
2 years ago
5

What is scientific notation, and why it is useful for reporting scientific measurements?

Chemistry
1 answer:
Mars2501 [29]2 years ago
8 0
Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form.
You might be interested in
What is the empirical formula of an oxide of nitrogen containing 63.61% by mass of nitrogen and 36.69% by mass of oxygen?
katen-ka-za [31]

Answer:

D. N₂O

Explanation:

Let's assume we have 100 g of the compound.  That means it consists of 63.61 grams of nitrogen and 36.69 grams of oxygen.

Converting masses to moles:

63.61 g N × (1 mol N / 14.01 g N) = 4.540 mol N

36.69 g O × (1 mol O / 16.00 g O) = 2.293 mol O

Normalize by dividing by the smallest:

4.540 / 2.293 = 1.980 mol N

2.293 / 2.293 = 1.000 mol O

So there is approximately twice as many N atoms as O atoms.  The empirical formula is therefore N₂O.

8 0
3 years ago
Which is an example of a heterogeneous mixture? <br>A coffee<br>B soil<br>C gelatin<br>D air
mariarad [96]
Heterogeneous mixtures are made of different substances that remain physically seperate. An example would be mixing sand and sugar together.
the answer would be soil
The answer is B soil
6 0
3 years ago
Mohr's salt is a pale green crystalline solid which is soluble in water. It is a 'double sulfate' which contains two cations, on
Veronika [31]
The gas is NH₃.
H₂ doesn't dissolve readily in water, SO₂ gives an acidic solution in water.

The solid residue is Fe(OH)₂.
FeSO₄ and Na₂SO₄ are soluble in water.

The answer is C.
3 0
3 years ago
In a chemcial reaction, substances
Fofino [41]

Answer:

My guess is c

Explanation:

5 0
3 years ago
What causes a water strider to be able to walk on water?
Lena [83]

Answer:

By repelling water, the tiny water striders stand on the water's surface and the captured airs allows them to float and move easily.  so number 2. Surface Tension.

Explanation:

The attraction between water molecules creates tension and a very delicate membrane. Water striders walk on this membrane. ... The legs have tiny hairs that repel water and capture air.

8 0
3 years ago
Read 2 more answers
Other questions:
  • If 3 g of element C combine with 8 g of element D to
    7·1 answer
  • Atoms are the smallest particles of a(n) ______ , which make up ________. compounds, elements elements, compounds compounds, mix
    10·1 answer
  • How are greenhouse gases like carbon dioxide and methane different from other atmospheric gases like nitrogen and oxygen?
    15·1 answer
  • Evaporation is a process that requires energy to occur. Evaporation is ain)<br> reaction
    6·1 answer
  • When completing an experiment, results will be much more accurate if multiple trials are completed and the results averaged. TRU
    14·2 answers
  • Someone please help me
    9·1 answer
  • Which of these solutes raises the boiling point of water the most?
    11·1 answer
  • What is a reactivity ceris
    14·2 answers
  • What is the complete ionic equation for the reaction between Na2SO4 and
    10·1 answer
  • What's the gravity and motion ​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!