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emmainna [20.7K]
3 years ago
10

Which formula is a molecular compound? H2O2 CaO MgS NaCl

Chemistry
2 answers:
Alborosie3 years ago
8 0

Answer:

H2O2

Explanation:

hammer [34]3 years ago
8 0

Answer:

H2O2

Explanation:

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What acid and base form Ca3(PO4)2
olya-2409 [2.1K]
Base is Ca(OH)2.
Acid is H3PO4.

First part of the salt comes from base, 
second par comes from the acid.
3 0
3 years ago
What properties are associated with metals (grade 9 science)
quester [9]

Answer:

metals can be magnetic.

Explanation:

certain types of metals are magnetic.

5 0
2 years ago
An 80.0-gram sample of a gas was heated from 25 °C to 225 °C. During this process, 346 J of work was done by the system and its
german
Hello!

First you need to calculate q 
<span>delta U is change in internal energy </span>

<span>delta U = q + w </span>
<span>q is heat and w work done </span>
<span>here work was done by the system means energy leaving the system so w is negative </span>

<span>delta U = q + w </span>

<span>q = delta U - w = 6865 J - (-346 J) = 7211 J = 7.211 KJ </span>

<span>q = m x c x delta T </span>

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<span>c = 0.451 J /g °C
</span>
Hope this Helps! Have A Wonderful Day! :)
5 0
3 years ago
C2H4O2 + NaC2H3O2 + H2O + CO2 list the reactants in this chemical reaction
lisabon 2012 [21]

Answer:

C₂H₄O₂ and NaC₂H₃O₂ are reactants.

Explanation:

Word equation:

Acetic acid + sodium acetate  → sodium diacetate

Chemical equation:

C₂H₄O₂ + NaC₂H₃O₂  →  C₄H₇NaO₄

This is a synthesis reaction in which simple reactants combine to form complex product.

This is also balanced chemical equation because there are equal number of atoms of all elements on both side of equation. Thus it follow the law of conservation of mass.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by french chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

7 0
3 years ago
How many protons, neutrons, and electrons are in a neutral atom with the symbol 41Ca
Harlamova29_29 [7]
B  the atomic number is 20 and then you subtract atomic mass to find the neutrons
3 0
3 years ago
Read 2 more answers
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