How many significant figures does 546.000 have

Answers

Answer 1

Answer: This has only only three sig figs because it is 546.000 the zeros are just place holders so thus meaning they are not significant. It is just another way to write 546 because in that number there is also 3 sig figs. They are just trying to throw you off. Just watch out because if the example is 540 then it is just two significant digits, and it were to be 540. then it be three cause that "." makes the zero significant.

Answer 2

Answer:

Answer:

Its 7

Explanation:

I took the test...

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In this equation, what should be the coefficients of the reactants and products?I2 + O2 ---> I4 O9

Answers

4 I₂+ 9 O₂ = 2 I₄O₉

Reactants :

I₂ , O₂

Products :

I₄O₉

hope this helps!

The coolest stars in the sky are ____ in color

Answers

Red is the answer in the blank

Answer:

They are Red.

Carbonic acid dissolves limestone and other rocks. This is an example of _____. chemical errosion

Answers

Carbonic acid dissolves limestone and other rocks. This is an example of chemical erosion. An example is in the caves. Caves are formed where rainwater as it falls through the atmosphere absorbs carbon dioxide. The carbon dioxide makes the rain acidic to react it with the limestone bedrock. The rainwater is absorbed by the soil into the ground. Then as it enters through the soil, the rainwater will absorb more carbon dioxide that is produced by the decomposers. The carbon dioxide with water reacts to form carbonic acid. The carbonic acid will react to limestone and dissolves it slowly. As the space become larger, water can enter into it.

Answer:

chemical errosion

Explanation:

Solids retain their shape and size, if kept constant temperature and pressure. At a constant temperature and pressure, liquids retain their:a. volume
b. shape
c. size
d. shape and volume

Answers

At a constant temperature and pressure, liquids retain their volume of matter.

What are the properties of matter ?

Matter is defined as total mass which occupy in space, all the physical structures are composed of matter, it can be present in three basic states such as solid, liquid, and gas.

The atoms are basic unit of matter and that make up the objects which can be visible and touched every day, the amount of matter in an object can be determined by its mass.

A physical property of matter is an independent of its chemical composition. Density, color, hardness, melting and boiling points, and electrical conductivity are the examples.

Some characteristics like density, color, mass, volume, length, malleability, melting point, hardness, odor, temperature are some properties of matter.

Learn more about properties of matter , here:

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simply volume, as shape and size depend on the host container

Amines are derivatives of the ______ molecule.aldehyde
ammonia
acetone
nitric acid

Answers

Amines are derivatives of the ammonia molecule. Ammonia or azane is a compound of nitrogen and hydrogen, it is a colorless gas with a characteristic pungent smell.

Answer: ammonia

Explanation:- Functional groups are specific group of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules.

1. Aldydes have functional group $-O=C-H$ .