2 years ago

What did you observe when heat was added to the penny with iodine?

1 answer:

8 0

This is a difficult task because zinc is much more active than copper and could hardly be passivated. ... The sur- face immediately turns white (the color of copper(I) iodide) and the yellow-brown color of iodine quickly fades. Rinse the coin with water, brighten it with polish and cloth and begin the whole process again.N

You might be interested in

If you are given an unknown liquid that is 1.0 L and has the mass of 500 grams which of the substance would it be. Distilled Wat

kodGreya [7K]

........................................................................

8 0

3 years ago

at 30°C 80 g of sodium nitrate is dissolved in 100 g of water is a solution saturated and unsaturated or supersaturated

soldi70 [24.7K]

Answer:

Explanation:

thats the answer

4 0

3 years ago

Select the correct answer.

rewona [7]

We can use the formula P=IV to calculate the current, where “P” is power (measured in watts), “I” is current (measured in Amps), and “V” is voltage. Simply plug and solve:

P = IV
(3.5 Watts) = I(120 volts)
I = 0.0292 Amps

The current flowing through the bulb is approximately 0.0292 Amps.

Hope this helps!

5 0

2 years ago

what is the density of an object that has a mass of 550 grams and displaces 25 ml of water? select all that apply. 22 ml/g .04 m

Black_prince [1.1K]

Density = mass / volume

D = 550 / 25

D = 22 g/mL

hope this helps!

3 0

2 years ago

Read 2 more answers

Which best explains how photosynthesis is helpful to humans? It reduces the amount of harmful rays released by the sun. It incre

masya89 [10]

Answer:I believe that the answer is c

Explanation: photosynthesis gives us oxygen to breath therefore it is helpful to humans