A radar gun records the speed of a projectile to be 120.090 m/s. How many significant digits are present in this measurement?

Chemistry

1 answer:

Olegator [25]3 years ago

7 0

Answer:

Explanation:

Significant figures:

The given measurement have six significant figures 120.090.

All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.

Leading zeros are not consider as a significant figures. e.g. 0.03 in this number only one significant figure present which is 3.

Zero between the non zero digits are consider significant like 104 consist of three significant figures.

The zeros at the right side e.g 2400 are also significant. There are four significant figures are present.

In 120.090 the zero before and after 9 are also significant.

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What is the empirical formula of a compound composed of 30.5 g potassium (k) and 6.24 g oxygen (o)?

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K5O2

convert grams to moles, divide both by the smallest mole mass, multiply that until hole.

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The cis and trans geometric isomers of a compound have different chemical and physical properties. Draw the structure of the geo

frutty [35]

<u>Answer:</u> The structure of the geometrical isomers are attached below.

<u>Explanation:</u>

Cis- and Trans- isomers are the geometrical isomers which have same chemical formula but different structural formula

According to CIP rule, the groups on the doubly bonded carbon atoms are given priorities based on the the atomic masses of first connected atom.

If the highest priority groups are on the same side, it is known as cis-form and if the highest priority groups are on opposite side, it is known as trans-form.

We are given a chemical compound, which is 2-pentene.

In this the highest priority groups are methyl and ethyl groups.

When the groups are on the same side, it forms cis-form and when the groups are on the opposite side, it forms trans-form

The structure of the geometrical isomers are attached below.