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3 years ago

What type of change is the following: striking a match chemical, or physical?

1 answer:

7 0

Chemical,when you light a match stick, you are starting a chain reaction of the substance chemical formula, making it a chemical change

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Cuantos gramos necesito para preparar una solución de 500 ml al 35% de NaCl

Iteru [2.4K]

A patient who is prescribed a dose inhaler will find that it must be filled with a) medicine in powder form only. Works with lower (not upper) respiratory diseases only. Full of medicine used to give a fixed amount of medicine per oral inhalation. d) Medication in the form of a spray only.

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3 years ago

A solid and a liquid are shaken together in a test tube to produce a milky mixture that eventually separates into a clear liquid

Svet_ta [14]

It is insoluble. Because one of the substances are polar and the other is non-polar.

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2 years ago

Read 2 more answers

Equation balancing

meriva

Answer:

For a: The balanced equation is $2S(s)+3O_2(g)\rightarrow 2SO_3(g)$

For c: The balanced equation is $2NaOH(s)+H_2SO_4(aq)\rightarrow Na_2SO_4(aq)+2H_2O(l)$

Explanation:

A balanced chemical equation is one where all the individual atoms are equal on both sides of the reaction. It follows the law of conservation of mass.

For (a):

The given unbalanced equation follows:

$S(s)+O_2(g)\rightarrow SO_3(g)$

To balance the equation, we must balance the atoms by adding 2 infront of both $S(s)$ and $SO_3$ and 3 in front of $O_2$

For the balanced chemical equation:

$2S(s)+3O_2(g)\rightarrow 2SO_3(g)$

For (b):

The given balanced equation follows:

$2Al(s)+3Cl_2(g)\rightarrow 2AlCl_3(s)$

The given equation is already balanced.

For (c):

The given unbalanced equation follows:

$2NaOH(s)+H_2SO_4(aq)\rightarrow Na_2SO_4(aq)+H_2O(l)$

To balance the equation, we must balance the atoms by adding 2 infront of $H_2O(l)$

For the balanced chemical equation:

$2NaOH(s)+H_2SO_4(aq)\rightarrow Na_2SO_4(aq)+2H_2O(l)$

For (d):

The given balanced equation follows:

$C_3H_8(g)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(g)$

The given equation is already balanced.

4 0

3 years ago

You are pushing on a heavy door, trying to slide it open. If your friend stands behind you and helps you push, how have the forc

NeTakaya

Answer:

o tudo bie ms ouemuyllen quearomuit oajuda rvoc mi psarcisoqu e termnei ed cmoepetar esta questlã.oê

Explanation:

a egur oguta nestáincompel ta

6 0

2 years ago

PLEASE HELP NOW!!!!!!!

Dahasolnce [82]

The number of moles hydrogen produced when 6 moles of sodium are used is calculated as below

2Na + 2H2O = 2NaOH +H2

by use of mole ratio between Na to H2 which is 2:1 the moles of H2 is therefore

= 6 x1/2 = 3 moles of H2

7 0

3 years ago