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
Charra [1.4K]
3 years ago
10

20 POINTS IF YOU CAN ANSWER THIS CORRECTLY, PLEASE!

Chemistry
1 answer:
xeze [42]3 years ago
7 0

Answer: a

Explanation: trust me

You might be interested in
Why are gold and platinum sutible for making jewellery ? ​
Anon25 [30]

Answer:

Platinum Gold and silver are used to make jewellery because of the following reasons. They are highly lustrous metals which are resistant to corrosion. They are highly malleable and ductile so can be transformed into any shape or design.

Explanation:

6 0
2 years ago
Read 2 more answers
How many days does it take 16.Og of Gold-198 to decay to 1.0g? (each half-
forsale [732]

Answer:

10.8 days (3 sig.figs.)

Explanation:

All radioactive decay is 1st order decay defined by the expression A = A₀e^-kt

which is solved for time of decay (t) => t = ln(A/A₀) / -k

A = final weight = 1.0 gram

A₀ = initial weight = 16.0 grams

k = rate constant = 0.693/t(1/2) = 0.693/2.69 days = 0.258 days⁻¹

t = ln(1/16) / -0.258da⁻¹ = (-2.77/-0.258) days = 10.74646792 days (calculator)

≅ 10 days (1 sig. fig. based on given 1 gram mass)

4 0
3 years ago
Atom A has five protons, four neutrons, and five electrons. Atom
Anna35 [415]

Answer:

they are the same element because they have the same number of protons and electrons,but a different number of neutrons

6 0
3 years ago
Which statement describes a process involved in the evolution of Earth’s early atmosphere?
yan [13]

Answer:

The statement describes a process involved in the evolution of Earth’s early atmosphere would be:

Cyanobacteria transformed carbon dioxide in the atmosphere into oxygen during photosynthesis

Hope it helped :3

4 0
3 years ago
The chemical reaction between the reagents luminol and bleach produces a brief flash of light. Which change would most likely ma
Shalnov [3]
Decrease the temperature
8 0
3 years ago
Other questions:
  • What happens if you cool the crystallization solution in a container of ice that is too big?
    6·1 answer
  • Jane bought some raisins to keep in her purse as a snack what is one reason raisins dont need refrigeration
    8·2 answers
  • Pollution is an example of what kind of environmental problem
    9·1 answer
  • Lens coating are made of A.teflon B.bakelite C.melamine D.PVC
    7·1 answer
  • Why is it significant that the color emitted from the hydrogen emission spectrum is not white?
    6·1 answer
  • 9. In the reaction of sodium hydroxide with chlorine gas, sodium chloride, sodium hypochlorite, and water a
    11·1 answer
  • Someone please help?!?
    8·1 answer
  • The octet rule is the basis for the stability of the atom. According to this rule, the outermost shell of the atom must contain
    13·1 answer
  • Where is the epicenter of this hypothetical earthquake?
    14·1 answer
  • 1a) Why do we study gases since reformation​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!