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Crazy boy [7]
3 years ago
14

So our professor didn't go over this but is freshly cut sodium, but rapidly tarnishes on contact with air a physical or chemical

property?​
Chemistry
1 answer:
Anna35 [415]3 years ago
6 0

Answer:

Hey!

After the slight confusion (haha)...

Your answer should be a CHEMICAL CHANGE / PROPERTY

Explanation:

Its CHEMICAL because the sodium has reacted with the air (oxygen in technical terms) which then forms SODIUM OXIDE...the tarnishing of the cut sodium surface it a thin layer of the SODIUM OXIDE...

HOPE THIS HELPED!

You might be interested in
Calcium reacts with Hydrochloric acid to produce Calcium chloride and
hammer [34]

Answer:

Mass = 2.77 g

Explanation:

Given data:

Mass of HCl = 2 g

Mass of CaCl₂ produced = ?

Solution:

Chemical equation:

2HCl + Ca    →     CaCl₂ + H₂

Number of moles of HCl:

Number of moles = mass / molar mass

Number of moles = 2 g/ 36.5 g/mol

Number of moles = 0.05 mol

now we will compare the moles of HCl with CaCl₂.

                   HCl       :         CaCl₂

                     2         :          1

                   0.05     :       1/2×0.05 = 0.025 mol

Mass of CaCl₂:

Mass = number of moles × molar mass

Mass = 0.025 mol × 110.98 g/mol

Mass = 2.77 g

8 0
3 years ago
A salt is best described as a compound that is formed from the reaction between
kaheart [24]

Answer:

b

Explanation:

5 0
4 years ago
Quick question
IceJOKER [234]

Answer:Um... I think 5000 i am not really sure

Explanation: I Dont Really Know

4 0
3 years ago
SOMEONE PLEASE HELPPP​
xxTIMURxx [149]
A is the correct awnser Beacuse it ether right kne
5 0
3 years ago
A 75 Kg skateboarder is riding downhill, exerting 25 N. What is their acceleration?
Hunter-Best [27]

Answer:

<h3>The answer is 0.33 m/s²</h3>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m}  \\

where

m is the mass

f is the force

a is the acceleration

From the question

f = 25 N

m = 75 kg

We have

a =  \frac{25}{75}   =  \frac{1}{3}  \\  = 0.333333333...

We have the final answer as

<h3>0.33 m/s²</h3>

Hope this helps you

4 0
3 years ago
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