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
bekas [8.4K]
3 years ago
6

Quais são os nomes dos planetas anões

Chemistry
1 answer:
irakobra [83]3 years ago
6 0

Answer:

Can you translate it on English so we can understand

You might be interested in
The purging of impurities from a compound by crystallization:
Nuetrik [128]
C.

This is also the only change by which crystals may be produced.
5 0
3 years ago
Read 2 more answers
True or false: A skeleton equation in chemistry shows the relative amounts of all materials in the reaction
Neko [114]

Answer:

false im pretty sure.

4 0
3 years ago
Just write a C.E.R (claim, evidence, reasoning)​
Charra [1.4K]

Answer:

I have attached pictures below. Maybe those will help?

Explanation:

5 0
3 years ago
Read 2 more answers
Four balloons, each with a mass of 10.0 g, are inflated to a volume of 20.0 L, each with a different gas: helium, neon, carbon m
weeeeeb [17]
On temperature 25°C (298,15K) and pressure of 1 atm each gas has same amount of substance:
n(gas) = p·V ÷ R·T = 1 atm · 20L ÷ <span>0,082 L</span>·<span>atm/K</span>·<span>mol </span>· 298,15 K
n(gas) = 0,82 mol.
1) m(He) = 0,82 mol · 4 g/mol = 3,28 g.
d(He) = 10 g + 3,28 g ÷ 20 L = 0,664 g/L.
2) m(Ne) = 0,82 mol · 20,17 g/mol = 16,53 g.
d(Ne) = 26,53 g ÷ 20 L = 1,27 g/L.
3) m(CO) = 0,82 mol ·28 g/mol = 22,96 g.
d(CO) = 32,96 g ÷ 20L = 1,648 g/L.
4) m(NO) = 0,82 mol ·30 g/mol = 24,6 g.
d(NO) = 34,6 g ÷ 20 L = 1,73 g/L.
6 0
3 years ago
Read 2 more answers
the mass of a liquid is 11.50 g and its volume is 9.03 mL. How many significant figures should its density value have?
BlackZzzverrR [31]

Answer:

3

Explanation:

The mass has 4 sig digits.

The volume has 3 sig digits

The density is = 11.50/9.03 = 1.2735

To 3 sig digits (determined by 9.03) the answer would be 1.27 gram/mL

6 0
3 years ago
Other questions:
  • Here is a more complex redox reaction involving the permanganate ion in acidic solution: 5fe2+ + 8h+ + mno4− → 5fe3+ +mn2+ + 4h2
    5·1 answer
  • If 0.300 moles of Cl2 is mixed with 0.600 moles of F2 in a 5.00 L rigid reaction vessel, what is the final pressure in the vesse
    13·1 answer
  • The change in an object's volume that occurs when heat is added is called
    5·2 answers
  • Where do you think information is coded in a DNA molecule?
    14·2 answers
  • Why do the 8 phases of the moon occur
    15·1 answer
  • What happens to radio waves when they are exposed to a plant?​
    5·1 answer
  • Two samples of calcium fluoride are decomposed into their constituent elements. The first sample produced 0.154 g of calcium and
    11·1 answer
  • Which of the following is best described by the term macroscopic?
    10·1 answer
  • What is the temperature of the gas?
    7·1 answer
  • What substitute for fossil fuel depletion has been heralded as the solution to the nation’s energy problems??
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!