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3 years ago

1) How many different charges can O or H atoms have?

Chemistry

1 answer:

spayn [35]3 years ago

5 0

Answer:

The answer is 2.

Explanation:

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What is the definition of the word: Property (the scientific definition A makes up matter; makes up the world around us B an obj

IRISSAK [1]

Answer:

i feel like the answer is A

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3 years ago

10. A 2.36-gram sample of NaHCO3 was completely decomposed in an

Airida [17]

Answer:

0.79 g

Explanation:

Let's introduce a strategy needed to solve any similar problem like this:

Apply the mass conservation law (assuming that this reaction goes 100 % to completion): the total mass of the reactants should be equal to the total mass of the products.

Based on the mass conservation law, we need to identify the reactants first. Our only reactant is sodium bicarbonate, so the total mass of the reactants is:

$m_r=m_{NaHCO_3}=2.36 g$

We have two products formed, sodium carbonate and carbonic acid. This implies that the total mass of the products is:

$m_p=m_{Na_2CO_3}+m_{H_2CO_3}$

Apply the law of mass conservation:

$m_r=m_p$

Substitute the given variables:

$m_{NaHCO_3}=m_{Na_2CO_3}+m_{H_2CO_3}$

Rearrange for the mass of carbonic acid:

$m_{H_2CO_3}=m_{NaHCO_3}-m_{Na_2CO_3}=2.36 g - 1.57 g=0.79 g$

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3 years ago

How many variables are there in science

Sedaia [141]

There are three variables independent, dependent ,and controlled

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3 years ago

Multicellular organisms are organized into tissues, organs, and organ systems.TRUE OR FALSE

saul85 [17]

Answer:

True i think..............

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3 years ago

Read 2 more answers

The “fatal flaw” in Rutherford’s model of the atom was the idea that if the electrons were ________.

Wittaler [7]

The correct option is A. Rutherford model of the atom consider an atom to be made up of a central nucleus with electrons orbiting around it. The nucleus is considered to be tiny, heavy and its positively charged while the electrons are negatively charged. The shortcoming of this model is that it was not able to explain how the positive nucleus was not able to attract the negative electrons and pull them inside the nucleus.

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3 years ago