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kompoz [17]
3 years ago
12

Why does a microscope stage have a small hole in it?

Chemistry
1 answer:
jarptica [38.1K]3 years ago
4 0
Answer: B. Allow light to pass through. :)
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Draw the ester formed by the reaction of heptanoic acid and ethanol.
wariber [46]

Answer:

Ethyl heptanoate (see the attached image for the structure).

Explanation:

  • The reaction of heptanoic acid and ethanol will result ethyl heptanoate ester.
  • Ethyl heptanoate is the ester resulting from the condensation of heptanoic acid and ethanol. It is used in the flavor industry because of its odor that is similar to grape.
  • Kindly, see the attached image of the structure and the reaction.

3 0
3 years ago
What does the atomic number tell you about the atom of the element
andrew-mc [135]

The atomic number of an element tells you the number of protons within said element.

6 0
3 years ago
Complete the sentences to identify the trend in first ionization energies as one proceeds down the group 7A elements and explain
Harrizon [31]

Answer:

a)decrease

b)increase

c)smaller

d)smaller

Explanation:

Ionization energy decreases down the group due to increase in the atomic radius. The distance between the outermost electron and the nucleus increases hence the nuclear attraction for the outermost electrons become smaller and the ionization energy also become smaller as electrons are now easily removed from the outermost shell.

Hence the group of answer choices provided above.

3 0
3 years ago
What is the MSDS? Why is it important? *
Pavlova-9 [17]

Answer:

Hey there!

A MSDS is a Material Safety Data Sheet, and can be used to provide detailed and comprehensive information about the hazards of a certain product, such as medicine or chemicals.

Let me know if this helps :)

6 0
3 years ago
Va rog urgent chimie
iren2701 [21]

Answer:

Tahukah kamu, mengapa motor berhenti di depan lampu merah?

karena motornya direm. Coba kalau nggak direm bisa bahaya tuh.

Tebak binatang apa yang jago renang?

Bebek. Kalau ikan bukan renang tapi menyelam

Kenapa di rel kereta api ditaruh batu?

Soalnya kalau ditaruh duit nanti pada diambil.

7 0
3 years ago
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