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Papessa [141]
3 years ago
8

The ability to travel great distances in the shortest time was achieved by which invention?

Chemistry
1 answer:
Nutka1998 [239]3 years ago
6 0

By space travel.

Or aeroplanes.

Whichever one is in your choices

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How does the atmosphere and the hydrosphere affect climate
Bad White [126]
How is the hydrosphere changing? Human contributions to greenhouse gases in the atmosphere are warming the earth's surface - a process which is projected to increase evaporation of surface water and accelerate the hydrologic cycle. In turn, a warmer atmosphere can hold more water vapor.
6 0
3 years ago
__________ could be the formula of an alkene. a. c3h8 b. c2h8 c. c6h6 d. c3h6 e. c17h36
drek231 [11]

The general formula for alkenes is CnH2n, the formula with hydrogen count double the carbon count should be the correct formula for alkene and that is d. C3H6.

What are alkenes?

Alkenes, commonly known as olefins, are organic unsaturated hydrocarbons that have one or more carbon-carbon double bonds in their chemical structure and are composed of carbon and hydrogen atoms.

Alkenes are unsaturated hydrocarbons with a double bond between the carbon atoms. Carbon atoms are connected by at least one double bond. The general formula for alkenes is C n H 2n. Olefin is frequently substituted with alkenes. The word "olefin" comes from the Greek phrase "olefin gas," which denotes the production of oil.

<u>Since, their general formula is CnH2n, the formula with hydrogen count double the carbon count should be the correct formula for alkene and that is d. C3H6.</u>

To learn more about alkenes from the given link below,

brainly.com/question/27179090

#SPJ4

6 0
1 year ago
Aqueous sodium phosphate and aqueous iron (III) chloride react to produce aqueous sodium chloride and solid iron (III) phosphate
mojhsa [17]

Answer:

this one is hard

Explanation:

but it's iron because the sodium so yea there u go.

4 0
2 years ago
An atom is neutral. Its nucleus contains two protons and two neutrons. How
garri49 [273]

Answer:

we need to know which atom you're talking about and then you need to say what the mass number is then we can tell how many electrons there are.

(I think)

3 0
2 years ago
Read 2 more answers
A 1.50-g sample of hydrated copper(II) sulfate was heated carefully until it had changed completely to anhydrous copper(II) sulf
ElenaW [278]

Answer:

X = 5

Explanation:

Total mass here is 1.5g. Now after heating we have a mass of 0.957g Cu. This means heating had caused a loss of 1.5 - 0.957 = 0.543g of water.

Now, we will try to convert this into moles. This can be done by dividing the respective masses by the molar masses. While the mass of water is 18g/mol, the molar mass of CuSO4 is 160g/mol.

The division of the respective masses by the molar masses is thus:

CuSO4 = 0.957/160 = 0.006 moles

H2O = 0.543/18 = 0.03 moles

The ratios of the moles is thus: 0.03/0.006 = 5

Hence, the number of molecules of water of crystallization is 5

This means x = 5

5 0
3 years ago
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