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Helen [10]
3 years ago
11

Can someone please help me in this question?

Chemistry
1 answer:
Monica [59]3 years ago
5 0

Answer: the beaker with a higher boiling point is B.

Explanation:

since it contains more mass/ volume it takes up more time to heat up.

hope this helps!

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2 moles of sodium phosphate reacts with 3 moles of
miss Akunina [59]

Answer: 6 moles of NaCl are produced when 2 moles of sodium phosphate reacts with 3 moles of  calcium chloride

Explanation:

The balanced chemical equation is:

2Na_3PO_4+3CaCl_2\rightarrow 6NaCl+Ca_3(PO_4)_2  

According to stoichiometry :

2 moles of Na_3PO_4 require 3 moles of CaCl_2

Thus both are limiting reagent as both will limit the formation of product.

As 2 moles of Na_3PO_4 reacts with 3 moles of CaCl_2 give = 6 moles of NaCl

Thus 6 moles of NaCl are produced when 2 moles of sodium phosphate reacts with 3 moles of  calcium chloride

 

4 0
2 years ago
A firework exploding is an example of a (4 points) physical change chemical change phase change nuclear change
Irina-Kira [14]
A firework exploding is a chemical change as soon as you light the fuse the combustion reacts with the gunpowder.

I hope this helps, good luck!!!!
5 0
3 years ago
What is the total number of atoms of magnesium and phosphorus in 3Mg3(PO4)2?
JulsSmile [24]
Since the given formula is . According to cross method formula, magnesium has +2 charge so, is multiplied by 2.
Thus, 1 molecule of magnesium phosphate will contain 2 atoms of phosphorus.
Therefore, three molecules of magnesium phosphate contains following number of atoms.
Mg = 9
P = 6
O = 24
Hence, we can conclude that there are 6 atoms of phosphorus in three molecules of magnesium phosphate, .
4 0
2 years ago
40 PIONTS!! PLZZZZ HELP
never [62]

Lithium oxide is able to undergo both the processes of dissolution and dissociation.

Dissociation refers to the break down a chemical substance into its constituents. Ionization refers to the loss of electrons from a chemical specie while dissolving refers to the ability of a solid to form a solution.

Let us now look at each of the following species;

  • Lithium oxide undergoes dissolution and dissociation.
  • Magnesium nitride undergoes dissolution and dissociation.
  • Hydrobromic acid  undergoes dissolution and dissociation.

Learn more about ionization: brainly.com/question/1602374

8 0
2 years ago
Why is activation energy required to start some reactions?
maxonik [38]
The activation energy is the minimum required energy in order to start a reaction. It is the barrier to break to enable reactants to form products. It is not important only for some reactions but to all reactions. This energy should be supplied or reached first before we observe a reaction to happen.
4 0
3 years ago
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