All categories

3 years ago

Which information is sufficient to differentiate a

Chemistry

2 answers:

blagie [28]3 years ago

8 0

Answer: (3) The reactivity of each sample with water

Explanation: Since sodium dissolves in water, you could place the two elements in water and see which of the two dissolve

Novay_Z [31]3 years ago

3 0

"The reactivity of each sample with water" is sufficient to differentiate the sample of sodium from a sample of silver.

Explanation :

Silver does not undergo any reaction with water. Also, silver is insoluble in water under normal conditions. Thus it remains in its metallic state when it comes in contact with water.

On the other hand, sodium is highly reactive in water. It forms a colorless solution in water, which is basic. This basic solution is sodium hydroxide and hydrogen gas. The reaction of sodium and water is exothermic.

$2 N a(s)+2 H_{2} O \rightarrow 2 N a O H(a q)+H_{2}(g)$

You might be interested in

On which part of the carbon cycle have humans had the greatest impact? storage of co2 in the oceans all of the answer options ha

yarga [219]

Hello!

The part of the carbon cycle where humans had the greatest impact is the return of CO₂ to the atmosphere by burning of ancient organic matter.

The ancient organic matter is also called Fossil Fuels. Some Fossil Fuels are Petroleum and Coal. Fossil Fuels are used to power our society and are burned to provide energy for power plants and vehicles, and by burning them, Carbon Dioxide (CO₂) is produced, increasing the natural concentration of this compound in the atmosphere.

Have a nice day!

4 0

3 years ago

Consider four atoms from the second period: lithium, beryllium boron carbon and nitrogen which of these element has the lowest e

bearhunter [10]

Lithium has the lowest. if fluorine is the highest then lithium is the lowest. i hope this helps you out!

5 0

3 years ago

Read 2 more answers

18 grams 4 kilograms 8 kilograms

Rina8888 [55]

Answer:

1 18 grams

2 500g

4 960 grams

5 7 kilograms

5 0

3 years ago

Tarnish on copper is the compound CuO. A tarnished copper plate is placed in an aluminum pan of boiling water. When enough salt

oksian1 [2.3K]

Answer:

The standard cell potential is 2.00 V

Explanation:

Step 1: Data given

Cu is cathode because of higher EP

Al3++3e−→Al E∘=−1.66 V anode

Cu2++2e−→Cu E∘=0.340 V cathode

Step 2: Balance both equations

2*(Al → Al3+-3e−) E∘=1.66 V

3*(Cu2++2e−→Cu) E∘=0.340 V

Step 3: The netto equation

2 Al + 3Cu2+ +6e- → 2Al3+ + 3Cu -6e-

2 Al + 3Cu2+ → 2Al3+ + 3Cu

Step 4: Calculate the standard cell potential

E∘cell = E∘cathode - E∘anode

E∘cell = E∘ Cu2+/Cu - E∘ Al3+/Al

E∘cell =0.340 V - (-1.66) = 2.00 V

The standard cell potential is 2.00 V

4 0

3 years ago

What are some bad thing jellyfish do?

True [87]

Jellyfish aren't necessarily bad or do bad things humans do find that the tentacles that happen to "shock" or "electructe" people are bad. As well as the way jellyfish live in one grouping it is rare but you can find jellyfish out of a group, they do this that way they can eat and stay away from predators.

I hope this helped you!

3 0

3 years ago