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Nastasia [14]
2 years ago
6

EARTH SCIENCE: PLEASE HELP ME !!! Which tools do astronomers use to determine the effects of collisions between galaxies? Select

the two correct answers.(1 point)
computer simulations

print encyclopedia entries

space telescopes

solar system models
Chemistry
1 answer:
topjm [15]2 years ago
6 0

In studying effects of collisions between galaxies, astronomers usually make use of space telescopes.

Astronomy deals with the study of outer space. The study focuses on planets and other celestial bodies. Generally telescopes are used to study outer space. The particular type of telescope that is used depends on the need.

In studying effects of collisions between galaxies, astronomers usually make use of space telescopes.

Learn more: brainly.com/question/556195

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What type of earthquake wave can travel through both liquids and solids?
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The wave is called a P-Wave!
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3 years ago
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2Fe +3S= Fe2S3 how many grams of sulfur are involved in this reaction if 95 grams of iron are needed to react with sulfur
Zepler [3.9K]

Answer:

83 g

Explanation:

Step 1: Write the balanced equation

2 Fe + 3 S ⇒ Fe₂S₃

Step 2: Calculate the moles corresponding to 95 g of Fe

The molar mass of Fe is 55.85 g/mol.

95 g × 1 mol/55.85 g = 1.7 mol

Step 3: Calculate the moles of S needed to react with 1.7 moles of Fe

The molar ratio of Fe to S is 2:3. The moles of S needed are 3/2 × 1.7 mol = 2.6 mol

Step 4: Calculate the mass corresponding to 2.6 moles of S

The molar mass of S is 32.07 g/mol.

2.6 mol × 32.07 g/mol = 83 g

5 0
3 years ago
A lead sphere has a mass of 1.20 x 104 g, and its volume is 1.05 x 103 cm^3. Calculate the density of lead.
Hatshy [7]

Answer: The density of lead will be 11.42g/cm^3

Explanation:

Density is defined as the mass contained per unit volume.

Density=\frac{mass}{Volume}

Given : Mass of lead=1.20\times 10^4g

Volume of lead =1.05\times 10^3cm^3

Putting in the values we get:

Density=\frac{1.20\times 10^4}{1.05\times 10^3}=11.42g/cm^3

Thus density of lead will be 11.42g/cm^3

4 0
3 years ago
Convert 7.50 grams of glucose C6H12O6 to moles
Anna [14]

Answer:

0.04167mole

Explanation:

To convert gram to mole,

C6H12O6

C - 12

H - 1

O - 6

There are 6 moles of C, 12 mole of H and 6 mole of O

Therefore, multiply each number of mole by the mass of each element

C - 12 * 6 = 72

H - 1 * 12 = 12

O - 16 * 6 = 96

The molar mass of C6H12O6 = 72 + 12 + 96

= 180g/mol

Dividing the number of mass by the mm

= 7.50g / 180g/mol

= 0.04167 mole

4 0
4 years ago
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