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alina1380 [7]
3 years ago
15

Explain in your own words how telescopes are valuable tools for seeing the full range of the electromagnetic spectrum. Use evide

nce and details from the text in your answer.
Article link: sciencelearn.org.nz/resources/1625-light-and-telescopes
Chemistry
1 answer:
DochEvi [55]3 years ago
4 0

Answer: Well isn't it supposed to be in YOUR own words not someone else's.?.?.

Explanation:

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Which action is the best example of a direct observation
luda_lava [24]

Since you didn't have any extra information about the question I'll be presenting an example from my own textbooks that I've used.

An example of a direct observation is listening to a cricket chirp at night, and counting the number of chirps per minute.

Direct Observation is where the evaulator watches the subject in their usual habitat without disrupting or altering it.

3 0
3 years ago
Read 2 more answers
If you wanted to make .5 L of a 1 mole/L (M) of MgSO4 solution, how many grams of MgSO4 would you use?
tino4ka555 [31]

Answer:

0.5 grams

Explanation:

8 0
3 years ago
which of the following chemical structures can form hydrogen bonds with water? Methane (CH4), molecular oxygen (O2), hydrogen su
klio [65]

Answer:

Molecular oxygen and Hydrogen fluoride.

Explanation:

Definition:

Hydrogen bonding:

It is a type of dipole-dipole attraction between the hydrogen atom and more electronegative atoms.

In hydrogen bonding mostly the highly electronegative atoms are fluorine, nitrogen and oxygen.

Explanation:

In given compound such as methane CH₄ the electronegativity of carbon is 2.55 while that of hydrogen is 2.2 so there is smaller electronegativity difference that's why it can not form hydrogen bond.

In case of molecular oxygen the electronegativite atom oxygen is present. It can form hydrogen bonds with water. its electronegativity is 3.44.

In case of hydrogen fluoride the electronegativity atom fluorine is present. It will form hydrogen bonds with water. Its electronegativity is 3.98. So it is more likely to take part in hydrogen bonding.

8 0
3 years ago
Do you expect the compound Na4S to be a stable sulfur compound? Explain why or why not. Select the correct answer below: A. Yes,
tamaranim1 [39]

Answer:

No, because sulfur does not typically form negative ions or oxidation states less than 2−. The binary compound formed by sulfur and sodium is Na2S

Explanation:

Sulphur is a member of group 16. The oxidation states expected for sulphur in group 16 are -1, -2, +1, +2,+3,+4,+5 or +6. The elements of group 16 usually form negative ions with oxidation number of -2. They do not typically form negative ions with oxidation state less than -2.

The implication of this is that we actually do not expect the existence of a compound in which sulphur forms an S^4- anion. In reality, such an anion does not exist. Rather a binary compound of sulphur and sodium will have the formula Na2S because it contains the S^2- anion.

8 0
3 years ago
Many communities rely on solar energy for daily life uses.
trapecia [35]

Answer:

This would affect the communities that use solar energy greatly, in a negative way.  

Explanation:

If the moon were twice its size, and cast a larger shadow on Earth, the shadow would black out the earth to an almost night time, during the day.  We would have a 24+ hour night, and communities relying on nothing but solar energy would be out of power until the sun was out again.

8 0
3 years ago
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