Polished metals have a metallic luster, which means that?

Answers

Answer 1

Answer: Metallic luster refers to the way light casts off of a mineral. Polished metals such as gold have a metallic luster, which makes them look bright and shiny, and reflect more light than other minerals. There are also minerals that have metallic luster, but are not shiny or reflect much light, which is called dull metallic luster.

Metallic luster - bright, shiny
Dull metallic luster - not shiny

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Why are some constellations visible year-round, while others appear only part of the year?

Answers

Circumpolar constellations stay in the sky. Because of the rotation of the Earth and its orbit around the Sun, we divide the stars and constellations into two groups. Some stars & constellations never rise nor set, and they are called circumpolar.

circumpolar constellations stay in the sky. Because of the rotation of the Earth and its orbit around the sun, we divide the stars and constellations into 2 groups. Some stars and constellations never rise nor never set, and they are called circumpolar. Thus only some constellations are visible year- round

Which of the following best describes a person doing science? A. Dominick uses a computer to do his math homework. B. Lindsay measures the sizes of the craters on the Moon. C. Isabel invents a new kind of doorknob. D. Murray randomly predicts the result of a coin toss.

Answers

The correct answer is B. Lindsay measures the sizes of the craters on the Moon, is the best description of a person doing science.

Science is the practical and intellectual pursuit of the understanding of the physical and natural world that surrounds us. It involves a systematic study: observation, experimentation, data analysis, discussion and conclusion. Science is the human effort to gather knowledge about the universe.

Answer:

Explanation:

Which one of these is an element carbon carbon dioxide air water

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carbon is an element.
Carbon dioxide is a compound
air is a mixture
water can be both a compound/mixture depending on the type

What is the empirical formula of sulphur dioxide which contains 50% by mass of sulphur

Answers

Answer:

Empirical formula is SO2.

Explanation:

So the fraction of Sulphur is 0.50 and the fraction of oxygen is 0.50.

Dividing by the atomic masses of sulphur and oxygen:

S = .50 / 32 = 0.015625

O = .50 / 16 = 0.3125

Ratio of S: O = 0.015625/ 0.015625 to 0.3125/ 0.015625

= 1:2.

Answer:

Question what are you doing the same thing you guys have a good time

Explanation:

is this the same question why did they do that and how much they do it

100% short length
100% medium length
100% long length
50% long , 50% short

Answers

Answer:

100% medium

Explanation:

Since you got all Hh which equals medium it means all are going to be that.

Answer:

100% med

Explanation:

When temperature increases, what happens to the molecules in a chemical reaction?

Answers

They speed up and the reaction happens faster.

Answer As it heats up, the molecules speed up and the reaction happens faster.

Explanation:

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How many moles of HCl are present in 0.70 L of a 0.33 M HCl solution?a0.23 molOb0.38 mol0.28 molOd0.47 mol