CHEMISTRY HIGH SCHOOL

How many covalent bonds can each carbon atom form?

Answers

Answer 1
Answer:

The covalent bonds present in based on the valence electrons and thus form 4 bonds.

What are valence electrons?

The valence electrons are the number of electrons present on the last orbital of the atom.

The atomic number of carbon is 6, thereby it is given with the electronic configuration 2, 4.

There is the presence of the 4 valence electrons in the carbon atom, and thereby the number of covalent bonds formed by carbon atom is 4.

Learn more about valence electrons, here:

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Answer 2
Answer: Carbon can form a maximum of 4 covalent bonds because it has 4 valence electrons i.e. 4 outer electrons. 

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What are the products of burning fuel

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Which substance can not be decomposed by a chemical change?(1) AlCl3 (3) HI
(2) H2O (4) Cu

Answers

Cooper is the substance that can't be decomposed by a chemical chAnge. So 4)
The answer I choose is option (4) Copper

Which of the following can be found in an atom's nucleus?A. cells
B. shells
C. electrons
D. protons

Answers

D. protons

AND NEUTRONS

The atoms in a compound are held together by a chemical bond. The chemical bonds can be either covalent bonds or ionic bonds. Both the bonds are considered very strong bonds. These bonds are mainly formed by sharing of electrons or in the case when one of the elements making the compound donates electron to the other element. The nucleus of each atom attracts to form a strong bond. This property of attraction between the nucleus of the atoms actually helps in forming the chemical bonds. 

What is your question? HIGH SCHOOL CHEMISTRY 5+3 pts To ensure that the air in the shuttle remains free of excess CO2, engineers test the air-purification system. They combine 1.000 × 103 g LiOH with 8.80 × 1 02 g CO2. The reaction produces 3.25 × 102 g H2O. What is the limiting reactants in this test reaction

Answers

The balanced reaction is:

2LiOH + CO2 = Li2CO3 + H2O

We are given the amount of the reactants to be reacted. This will be the starting point of our calculations. To determine the limiting reactant, we convert the amounts from grams to moles.

1.000 × 10^3 g LiOH  (1 mol / 25.95 g) = 38.54 mol LiOH

8.80 × 10^2 g CO2 ( 1mol / 44.01 g) = 20.00 mol CO2

From the balanced reaction, the molar ratio of the reactants is 2:1. This means that every two mole of lithium hydroxide, 1 mole of carbon dioxide is needed. It is clear that, from the given amounts, CO2 is the limiting reactant.

CO2 is the limiting molecule.

How many molecules are in 69 grams of Na?

Answers

Molar mass Na = 23.0 g/mol

1 mol ---- 23.0 g
n mol ---- 69 g

n = 69 / 23.0

n = 3.0 moles

1 mole -------- 6.02x10²³ molecules
3.0 moles ---- ?

3.0 *  6.02x10²³ / 1

= 1.806x10²⁴ molecules

hope this helps!

The rate constant (k) for the decay of the radioactive isotope I-131 is 3.6 x 10-3 hours 1. The slope of which of the following graphs is correct for the decay and could be used to confirm the value of k?

Answers

Answer:

Explanation:

pom, add
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