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4 years ago

Which statement describes how technology has increased our information on Mars?

Chemistry

2 answers:

elena-s [515]4 years ago

6 0

Answer:

The correct statements are that the Curiosity rover found sulfur compound in rocks, and detected carbon in organic molecules.

Explanation:

The Curiosity rover detected methane gas in the atmosphere of Mars as well as organic substances from shallow-soil samples from Gale crater. Both the soil compounds and methane gas are organic matter. The organic matter is chemically illustrated as combinations of hydrogen, carbon, and other elements basically witnessed in biology like oxygen and sulfur, that is, usually related to life.

At certain times, the rocks can get produced on their own via the geological procedures. However, discovering organic matter in such large concentration indicates that it potentially exhibit biological origins, either from bacteria or other life forms, which prevailed long ago.

Luden [163]4 years ago

4 0

The Curiosity rover found sulfur compounds in rocks and carbon in organic compounds like propane, butene, benzene, toluene and thiophene.

It detected methane, not in soil samples, but in the Martian atmosphere.

It did not discover helium in underground pockets. The hole it can drill is only 5 cm deep.

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A map here shows the motion of a tectonic plate off the coast of the western united states. Which evidence supports the theory o

notsponge [240]

Answer:

Fossils, the shape of continents, the mid-ocean ridge system, sea floor sediment deposits, and the magnetism of rocks.

Explanation:

Fossils, the continent's shape, the mid-ocean ridge system, sea floor sediment deposits, and the magnetism of rocks on the sea floor are the evidences that support the theory of plate tectonics in the area. Fossils provides information to us when and where plants and animals once existed. Due to diverging plates, some life became isolated, and evolved into new species. Continental ‘fit’ through coastline matching. Some division of continents look as though they should fit together, e.g. South America and Africa.

7 0

3 years ago

If a compound has a composition of 82% nitrogen and 18% hydrogen, what is the empirical formula for this compound

Damm [24]

Answer: The empirical formula for the given compound is $NH_3$

Explanation : Given,

Percentage of H = 18 %

Percentage of N = 82 %

Let the mass of compound be 100 g. So, percentages given are taken as mass.

Mass of H = 18 g

Mass of N = 82 g

To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Hydrogen = $\frac{\text{Given mass of Hydrogen}}{\text{Molar mass of Hydrogen}}=\frac{18g}{1g/mole}=18moles$

Moles of Nitrogen = $\frac{\text{Given mass of nitrogen}}{\text{Molar mass of nitrogen}}=\frac{82g}{14g/mole}=5.8moles$

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 5.8 moles.

For Hydrogen = $\frac{18}{5.8}=3.10\approx 3$

For Nitrogen = $\frac{5.8}{5.8}=1$

Step 3: Taking the mole ratio as their subscripts.

The ratio of H : N = 3 : 1

Hence, the empirical formula for the given compound is $NH_3$

3 0

3 years ago

An attempt to explain observations of the natural world is

atroni [7]

A pseudoscientific theory

3 0

3 years ago

Summary of the periodic table

JulsSmile [24]

The periodic table to chart which arranges all of the unknown elements to the automatic numbers the columns in the periodic table are called families or groups the rows are called periods

4 0

3 years ago

How many formula units are there in 20.6 moles of Al(NO3)3?

Ket [755]

Answer:

How many moles Al(NO3)3 in 1 grams? The answer is 0.0046949186022713.

We assume you are converting between moles Al(NO3)3 and gram.

You can view more details on each measurement unit:

molecular weight of Al(NO3)3 or grams

This compound is also known as Aluminium Nitrate.

The SI base unit for amount of substance is the mole.

1 mole is equal to 1 moles Al(NO3)3, or 212.996238 grams.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between moles Al(NO3)3 and gram.

Type in your own numbers in the form to convert the units!

Explanation:

5 0

3 years ago