All categories

4 years ago

What happens ????????

Chemistry

2 answers:

Lemur [1.5K]4 years ago

6 0

The air pressure changes

ivolga24 [154]4 years ago

5 0

Correct me if I wrong but I think it's "c"

You might be interested in

What is the most important scientific process

kotykmax [81]

Answer:

atoms bonding

Explanation:

6 0

4 years ago

I just need help on the reactivity series stuff please I need to pass my grade check HELP

Setler [38]

Reactivity series:-

$\setlength{\unitlength}{0.8 cm}\begin{picture}(20,15)\thicklines\put(5,9.5){\large {\boxed{ \sf{Reactivity \: series}}}}\put(0.8,8){\large\sf K \qquad\qquad\qquad Potassium\qquad\qquad\qquad \: maximum}\put(0.8,7.2){\large\sf Na \qquad\qquad\qquad Sodium\qquad\qquad\qquad\quad \: reactivity}\put(0.8,6.2){\large\sf Ca\qquad\qquad\qquad \: Calcium}\put(0.8,5.2){\large\sf Mg\qquad\qquad\quad \: Magnesium}\put(0.8,4.2){\large\sf Al\qquad\qquad\qquad \: Aluminium\qquad\qquad\qquad \: decreasing}\put(0.8,3.2){\large\sf Zn\qquad\qquad\quad\qquad \: Zinc\qquad\qquad\qquad\qquad \:reactivity}\put(0.8,2.2){\large\sf Fe\qquad\qquad\quad\qquad Ferrous}\put(0.8,1.2){\large\sf Pb\qquad\qquad\qquad \: \:\: Lead}\put(0.8,0.2){\large\sf H\qquad\qquad\qquad \: \:Hydrogen}\put(0.8, - 0.6){\large\sf Cu\qquad\qquad\qquad \: Copper}\put(0.8, - 1.5){\large\sf Hg\qquad\qquad\qquad \: Mercury}\put(0.8, - 2.5){\large\sf Ag\qquad\qquad\qquad \: \:Silver}\put(0.8, - 3.5){\large\sf Au\qquad\qquad\qquad \: \: Gold\qquad\qquad\qquad\quad \: \: minimum reactivity}\put(9.3,8.2){\vector(0, - 2){12}}\end{picture}$

Ag is found as too less reactive so

Cu✓
Al✓
Ca✓

No element in universe can displace potassium (K) from its solution as it's most reactive .

Nota

Fe is also a reactive metal.

Only Cupper is less reactive than it

Al✓
Ca✓

Only Calcium can displace Mg

Mg and Ni can do ,Aurum(Gold) is least reactive so can't

Only Mg

Only Mg

Mg and Ni

Only Zn

#10

Zn and Pt

#11

Nota

As Ca is third most reactive metal

#12

Nota

4 0

3 years ago

Some hypothetical alloy is composed of 12. 5 wt% of metal a and 87. 5 wt% of metal b. If the densities of metals a and b are 4.

gavmur [86]

Answer:

The number of

atoms in the unit cell is 2

Explanation:

7 0

2 years ago

What does it mean for energy to be conserved

marysya [2.9K]

Answer: It means that the energy is being stored or preserved to be used at a later time.

Your question was a little vague, so if this isn't the answer you were looking for, just let me know and I'll fix it.

Hope this helps! Good luck! :D

6 0

3 years ago

What is the wavelength of light with 4.01 x 10^-19 J of energy? (The speed of light in a vacuum is 3.00 x 10^8 m/s, and Planck's

Vesna [10]

Answer:

hope it helps:)))!!!!!!

4 0

3 years ago