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labwork [276]
3 years ago
11

Are some chemicals safe while others are dangerous?

Chemistry
1 answer:
avanturin [10]3 years ago
4 0

Answer:

yes

Explanation:

some chemicals can kill you with just one drop.

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Na+CL2=2NACL is the balanced reaction for the formation of table salt. Given 20 grams of Na and 10 grams of Cl2, which reactant
Elina [12.6K]

Excess reactant : Na

NaCl produced : = 16.497 g

<h3>Further explanation</h3>

Given

Reaction(balanced)

2Na + Cl₂⇒ 2NaCl

20 g Na

10 g Cl₂

Required

Excess reactant

NaCl produced

Solution

mol Na(Ar = 23 g/mol) :

= 20 : 23 = 0.87

mol Cl₂(MW=71 g/mol):

= 10 : 71 g/mol = 0.141

mol : coefficient :

Na = 0.87 : 2 = 0.435

Cl₂ = 0.141 : 1 = 0.141

Limiting reactant : Cl₂(smaller ratio)

Excess reactant : Na

Mol NaCl based on mol Cl₂, so mol NaCl :

= 2/1 x mol Cl₂

= 2/1 x 0.141

= 0.282

Mass NaCl :

= 0.282 x 58.5 g/mol

= 16.497 g

4 0
2 years ago
What type of energy is a light switch
topjm [15]

Answer:

electrical

Explanation:

With electrical energy, it's helpful to think of an on/off switch. When the switch is off, the electrical energy is stored as potential energy. When the switch is on, electrical energy is being used as kinetic energy.

7 0
3 years ago
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Many elements will try to obtain ____ electrons in their outermost energy level (which is very stable) because filling it in may
VladimirAG [237]
I’m pretty sure 8 as well because elctrouns can’t hold more than that
8 0
3 years ago
Is the following equation balanced? SO3 + 2H2O H2SO4 no yes
postnew [5]

Answer: No

Explanation: It's not balanced because four oxygen atoms in H2SO4,  whereas there are 5 oxygen atoms in the reactants side. Also, there's more hydrogen atoms on the reactants side.

I hope this helps!

7 0
3 years ago
I NEED HELP, PLEASE AND THANK YOU! &lt;3
Basile [38]

Answer:allow for greater chances for a sentinel event

Explanation:

8 0
3 years ago
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