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babunello [35]
3 years ago
10

Give one safety precaution should take during carbon and lead oxide experiment​

Chemistry
2 answers:
Tcecarenko [31]3 years ago
8 0
Answer : Use safety goggles and gloves. Remember not to touch you face

Explanation:
Bingel [31]3 years ago
3 0

Answer:

use safety goggles

Explanation:

plz give me brainleist

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Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li (s) + N2 (g) → 2Li3N (s) In a particular ex
seraphim [82]

Answer: 6.71 g

Explanation: 6Li(s)+N_2(g)\rightarrow 2Li_3N

{\text{no of moles}}=\frac{\text{Given mass}}{\text{Molar mass}}

{\text {moles of lithium}}=\frac{4g}{6.914g/mol}=0.578moles

\text{moles of nitrogen}=\frac{4g}{28g/mol}=0.143moles

Limiting reagent is the reagent which limits the formation of product. Excess reagent is one which is in excess and thus remains unreacted.

Thus lithium is the limiting reagent and nitrogen is the excess reagent.

As can be seen from the balanced chemical equation,  6 moles of lithium reacts with 1 mole of nitrogen to give 2 moles of lithium nitride.

Thus 0.578 moles of lithium react with 0.096 moles of nitrogen.

6 moles of lithium give = 2 moles of lithium nitride

Thus 0.578 moles of lithium give=\frac{2}{6}\times {0.578}=0.19moles of lithium nitride.

Mass of lithium nitride Li_3N={\text {no of moles}}\times {\text {Molecular mass}}

Mass of lithium nitrideLi_3N={0.192moles}\times {34.83g/mol}=6.71g


8 0
3 years ago
Use the reaction to answer the question.
Vadim26 [7]

Answer:

–698 kJ/mol

Explanation:

i guessed and got it right

8 0
3 years ago
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Does alcohol affect enveloped or naked viruses more
slega [8]

Answer:

the protein capsid of naked  viruses is less susceptible to environmental .  condition

Explanation:

because the envelop is made in part of phospholipids. once the envelop is lysed ,the virus loses its functiovnal receptors and still able to infect susceptible cells.

7 0
3 years ago
What is the difference between covalent bonds and ions
Korvikt [17]
Ionic bonds have high emelting point amf boiling point while covale t bonds have low melting point and boiling point.
ionic bonds cannot conduct electricity in solid state but can conduct in the molten state or when dissolves in water. while covalent bonds cannot conduct electricity in any state.
ionic bonds are soluble in water but insoluble in organic solvents while most covalent bonds are soluble in organic solvents but insoluble in water
8 0
3 years ago
The atomic symbol superscript 40 subscript 19 upper k. represents potassium-40 (k-40), a radioactive isotope that has 19 protons
Oksana_A [137]

Answer:

40/18AR

Explanation:

sorry my answer was late but i hope this helps someone else! I got it right on the test

8 0
2 years ago
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