Ask question

Ask question

All categories

3 years ago

10

Is it easier to identify an unknown metal by such as physical properties as colour, lustre, mass, and volume, or by characterist

ic physical property such as density? Explain your answer.

2 answers:

grandymaker [24]3 years ago

7 0

The physical properties of a metal depend on how dense the metal is

sp2606 [1]3 years ago

6 0

It is easier to identify it by lustre colour mass and volume because density changes with states

You might be interested in

A teacher wants to perform demonstration that illustrates both chemical and physical changes. Which would be the best demonstrat

saveliy_v [14]

Answer:

D) burning a candle

A demonstration that contains both physical and chemical changes will be BURNING OF A CANDLE.

<em>This is because when a candle is lighted up, on the top of it (where we see flame) the oxygen and other gases present around will be chemically changed (burned up)</em>

<em>When the wax in the top of the candle will get melted due to the heat of the fire a physical change takes places.</em>

4 0

4 years ago

How many moles of NaCl are there in 6.93g?

kkurt [141]

8.43
58.44g/mol*1/6.93g= 8.43moles of NaCL

5 0

3 years ago

How are energy and work related?

Luda [366]

Answer:

c

Explanation:

because u need the energy to be able to work

8 0

3 years ago

7. A. How many moles of Calcium hydroxide (CaOH2) are needed to completely react with 14.5 mol of Phosphoric acid (H3PO4)?

Artyom0805 [142]

Answer:

moles of calcium hydroxide= 21.75 mol

a) 43.5 mol

b) 7.25 mol

Explanation:

Please see the attached picture for the full solution.

6 0

3 years ago

An atom of sodium has atomic number 11 how many protons are there ?

adoni [48]

An atom of sodium has 11 protons

6 0

4 years ago