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3 years ago

11

How can a periodic table help a chemist write the chemical name of a compound from its chemical formula?

2 answers:

madam [21]3 years ago

7 0

It's B. by identifying the elements.

Reasons:
prefixes are only used for covalent compounds.

You don't include the number of atoms when you write the chemical name of a compound.

Subscripts are basically numbers that tell how many atoms of each element is in a compound. It does not identify the name of an element.

creativ13 [48]3 years ago

4 0

Answer:

B) by identifying the elements

Explanation:

EDGE 2020 brainliest please

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2 years ago

The temperature of a 100.0 g sample of water is raised from 30degrees celsius to 100.0 degrees celsius. How much energy is requi

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Answer:

29260J

Explanation:

Given parameters:

Mass of water sample = 100g

Initial temperature = 30°C

Final temperature = 100°C

Unknown:

Energy required for the temperature change = ?

Solution:

The amount of heat required for this temperature change can be derived from the expression below;

H = m c (ΔT)

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2 years ago

An electrochemical cell has the following standard cell notation.

Alona [7]

Explanation:

The given following standard cell notation.

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$Mg(s)\rightarrow Mg^{2+}+2e^-$ ....(1)

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Reduction:

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Silver ion by gaining 1 electrons is getting converted into silver metal. Hence, getting reduced.

Overall redox reaction: (1)+2 × (2)

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3 years ago