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
strojnjashka [21]
3 years ago
11

HELP ME PLEASE!! IAM BEING TIMED. I WILL GIVE YOU BRAINLIEST!

Chemistry
2 answers:
dangina [55]3 years ago
8 0

Answer:

If it is made from solid silver then it is an element. If it is made from a silver alloy then it is a mixture. If it is a silver plated plate (i.e. a plate made from say, copper but with a thin layer of silver on top) then it is an element on top of an element.

Explanation:

I'm assuming you're talking about solid silver, so, i believe an element.

Goshia [24]3 years ago
4 0

Answer:

Element

Explanation:

Other things on that list like alloy and compound can be broken down, but elements cannot

You might be interested in
How does heat affect a water droplet's state of matter
Olegator [25]

Answer:

Explanation:

A substance with a high specific heat, such as the water in Figure 9, heats up and cools down slowly because a much larger quantity of heat is required to cause its temperature to rise or fall by the same amount. Matter can change from one state to another when thermal energy is absorbed or released.

7 0
3 years ago
A person lying out in the sun to get a tan is an example of conduction, convection, or radiation.
steposvetlana [31]

Answer:

its radiation

Explanation:

just googled it rn trust me

3 0
3 years ago
Read 2 more answers
No links right answers only!! 9recipitation like in the Arctic tundra.
erik [133]
The answer is. B hope it helps plz mark me a brainless plz
4 0
3 years ago
Read 2 more answers
A chemist wishing to do an experiment requiring 47-Ca2+ (half-life = 4.5 days) needs 5.0 μg of the nuclide. What mass of 47-CaCO
NARA [144]

Answer:

5.8μg

Explanation:

According to the rate or decay law:

N/N₀ = exp(-λt)------------------------------- (1)

Where N = Current quantity,  μg

            N₀ = Original quantity, μg

             λ= Decay constant day⁻¹

              t =  time in days

Since the half life is 4.5 days, we can calculate the  λ from (1) by  substituting N/N₀ = 0.5

0.5 = exp (-4.5λ)

ln 0.5  = -4.5λ

-0.6931 = -4.5λ

λ =   -0.6931 /-4.5

  =0.1540 day⁻¹

Substituting into (1)  we have :

N/N₀ = exp(-0.154t)----------------------------- (2)

To receive 5.0 μg of the nuclide with a delivery time of 24 hours or 1 day:

N = 5.0 μg

N₀ = Unknown

t = 1 day

Substituting into (2) we have

[5/N₀]   = exp (-0.154 x 1)

    5/N₀        = 0.8572

N₀  =  5/0.8572

     =    5.8329μg

    ≈     5.8μg

The Chemist must order 5.8μg  of 47-CaCO3

6 0
2 years ago
Do substances react by mass? Yes or no explain
daser333 [38]

yes substances Do  react by mass

5 0
3 years ago
Other questions:
  • What can u add into a powdered drink to make it drinkable?
    9·1 answer
  • What the volume is.
    9·1 answer
  • What is the pOH of a solution with a pH of 8?<br><br> 14<br><br> 6<br><br> 8<br><br> 0
    13·1 answer
  • The heat of fusion for water is the amount of energy that must be absorbed for water to ___. a.evaporate b.freeze a.boil d.melt
    14·1 answer
  • A substance that speeds up the rate of a chemical reaction is called
    11·2 answers
  • The level of a liquid (i.e. distilled water) in laboratory glassware is determined by sight. The level corresponds to a specific
    8·1 answer
  • What determines how molecules are redistributed in diffusion?​
    13·1 answer
  • Which changes would cause an increase in the resistance of a wire? Check all that apply.
    5·2 answers
  • A chemist mixed two substances together: a blue powder with no smell and a colorless liquid with a strong smell. Their repeating
    11·1 answer
  • You have two solutions of chemical A. To determine which has the highest concentration of A (molarity), which of the following m
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!