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almond37 [142]
2 years ago
13

How did the invention of the telescope help the Italian scientist Galileo in 1609 observe the moon and see the mountains, valley

s, and craters? Answer A A telescope is an instrument that magnifies tiny objects to make them appear bigger B A telescope is an instrument that magnifies distant objects to make them appear closer C A telescope is an instrument that illuminates tiny objects to make them appear bigger D A telescope is an instrument that illuminates distant objects to make them appear closer
Chemistry
1 answer:
erik [133]2 years ago
3 0

Answer:

I think it's

(A) A telescope is an instrument that magnifies tiny objects to make them appear bigger

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D-Fructose is the sweetest monosaccharide. How does the Fischer projection of D-fructose differ from that of D-glucose? Match th
Aleks04 [339]

Answer:

aldehyde

carbon-1

ketone

carbon-2

Explanation:

Monosaccharides are colorless crystalline solids that are very soluble in water. Moat have a swwet taste. D-Fructose is the sweetest monosaccharide.

In the open chain form, monosaaccharides have a carbonuyl group in one of their chains. If the carbonyl group is in the form of an aldehyde group, the monosaccharide is an aldose; if the carbonyl group is in the form of a ketone group, the monosaccharide is known as a ketose. glucose is an aldose while fructose is a ketose.

In D-glucose, there is an aldehyde functional group, and the carbonyl group is at carbon-1 when looking at the Fischer projection.

In D-fructose, there is a ketone functional group, and the carbonyl group is at carbon-2 when looking at the Fischer projection.

6 0
2 years ago
The electron dot diagram for a neutral atom of chlorine (atomic number 17) is shown below.
Tom [10]
The answer is B ! Hoped I helped!
8 0
2 years ago
Read 2 more answers
How many grams of water (H2O) will be produced from 96.0 grams of oxygen (O2)?
jekas [21]

Answer & Explenation:

2H2 + O2 -> 2H20 is the balanced equation for the reaction of Hydrogen with Oxygen to form water so

If you have 32g of O2 this is a simple Dimensional analysis problem

32g O2 x 36.03056g H20/31.9988g O2 this way the O2 cancels out and you are left with just the H2O so your raw answer would be 36.0319112, then if your instructor requires a significant figure answer that would be to 2 significant figures the information you were given 32g O2, so as above 36g or Water are produced. Just a different way to view and solve the problem with the balanced equation so you can see the way everything relates to everything else. the molar masses of O2 and H2O are simply found my adding up 2 Oxygens 15.9994g x2 = 31.9988g and H2O = 2(1.00794) + 15.9994 = 18.01258 but you then have to multiply that by 2 because the reaction states you get 2 mols in the reaction so that is where I came up with the 36.03056g for the solution. Hope this helps. Dimensional Analysis is and can be one of the best ways to solve these problems, because not always are you going to be dealing with 1:2 ratios.

4 0
3 years ago
Why are redox reactions used in batteries?
Phoenix [80]

Answer:

Why are redox reactions used in batteries? The attraction between charged ions releases energy. The movement of electrons creates an electric current. The reactions are extremely exothermic, producing an electric current.

Explanation:

Why are redox reactions used in batteries?

The attraction between charged ions releases energy.

The movement of electrons creates an electric current.

The reactions are extremely exothermic, producing an electric current.

The reactions are extremely endothermic, inducing the movement of electrons.

5 0
3 years ago
Mr. Gordon's science students are studying scale models of the Sun-Earth-Moon system. Mr. Gordon is using this model to show his
4vir4ik [10]
The sun is too small
3 0
2 years ago
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