CHEMISTRY HIGH SCHOOL

How to know that something is a basic oxide or acedic oxides?
plz help ​

Answers

Answer 1
Answer:

Explanation:

General Rules. In general, the electropositive character of the oxide's central atom will determne whether the oxide will be acidic or basic. The more electropositive the central atom the more basic the oxide. The more electronegative the central atom, the more acidic the oxide.

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A disadvantage of solar energy is the need for?

Answers

A disadvantage of solar energy is that solar power cannot be created during the night since the sun doesn't shine 24 hours. Also, the production of energy is decreased during cloudy days. Solar energy uses the light from the sun to create energy.

a supplemental heating unit for cloudy days, winters, and nighttimes

The combustion of a sample of butune, C4H10 (lighter fluid), produced 2.46 grams of water. 2 C4H10 + 13O2------> 8CO2 + 10H2O

How much oxygen is used up in grams?

Answers

Molar mass :

H₂O = 18.0 g/mol
O₂ = 32.0 g/mol

2 C₄H₁₀ + 13 O₂ = 8 CO + 10 H₂O

13 x 32.0 g O₂ ------------- 10 x 18.0 g H₂O
            ? g O₂ ------------- 2.46 g H₂O


Mass O₂ = 2.46 x 13 x 32.0 / 10 x 18.0

Mass  O₂ =1023.36 / 180

=> 5.68 g of O₂

hope this helps!

Which statement best describes gamma radiation?(1) It has a mass of 1 and a charge of 1.
(2) It has a mass of 0 and a charge of –1.
(3) It has a mass of 0 and a charge of 0.
(4) It has a mass of 4 and a charge of +2.

Answers

The correct answer is option 3. Gamma radiation is a type of electromagnetic radiation which is characterized by having the smallest wavelength resulting to having the most energy in the electromagnetic spectrum. Gamma radiation has no mass and no charge.

Which of the following sets represents a pair of isotopes? 14C and 14N 206Pb and 208Pb O2 and O3 32S and 32S2-

Answers

Isotopes are substances that have the same number of protons but differ in the number of neutrons. Hence, the pair of isotopes above should be of the same element. In the given choices, 14C is not an isotope of 14N. 206Pb is an isotope of 208 Pb. O2 and O3 differ in molecular formula but still made up of same kind of atom, hence they are allotropes, while 32S and 32S2- are not isotopes.  

The reaction AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) is a_________reaction. please help

Answers

Answer:

it's a precipitation reaction.

Explanation:

the solid produced is insoluble with water–making it a precipitate.

Every atom of the _______ carbon has 6 protons.

Answers

The answer is element. Elements consist of identical atoms, which differ between elements. Atoms are the basic units of matter. They are made up of protons, neutrons, and electrons. Carbon is an element. It contains only of carbon atoms. Every atom of element carbon consists of 6 protons.Hope this helps. Let me know if you need additional help!

Answer: Element

Explanation: hope this helps :3
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