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3 years ago

Mg(NO3)2 soluble or insoluble?

Chemistry

1 answer:

hammer [34]3 years ago

7 0

Answer:

The chemical compound Mg(NO3)2, also known as magnesium nitrate, is very soluble, especially in water.

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How many protons are there in a metallic ion which has 18 electrons

aev [14]

I am pretty sure that electron amounts and proton amounts are the same.

6 0

3 years ago

Match each weather phenomena listed below to its appropriate scale of motion. longwave ridges and troughs microscale a high pres

Ipatiy [6.2K]

Answer:

Longwave ridges = Global scale

High pressure system persists over the central plains for 4 days = Synoptic scale

Supercell thunderstorm that lasts for over an hour = mesoscale

A turbulent eddy = microscale

Explanation:

Global scale has a range of the entire earth

synoptic scale has a range of about 100-1000km and can last fro days to weeks

mesoscale has a range of 4-100km and lasts for a day maximum

microscale is the least of all atmospheric motions.

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3 years ago

Which could describe the motion of an object? distance = 1 meter and displacement = 10 meters distance = 10 meters and displacem

Tcecarenko [31]

Answer:

Distance = 10 meters and displacement = 10 meters

6 0

3 years ago

Read 2 more answers

As photosynthesis occurs in chloroplasts, O2 is produced from _____ via a series of reactions associated with _____. View Availa

Monica [59]

Answer:

H₂O, Photosystem II

Explanation:

Photosynthesis is the process that enables autotrophs such as green plants and algae to generate food using water, carbon dioxide and energy from the sun.
It occurs in two phases, that is, the light-dependent phase and the light-independent phase.
During photosystem II energy from the sun is used to break-down water molecules to yield oxygen and hydrogen ions. Oxygen is released away to the atmosphere while hydrogen ions are used in the next phase to generate ATP molecules.

6 0

4 years ago

If you have 10.0 g of hydrogen and 5.0 g of oxygen, what mass of the excess reagent remains after the completion of the reaction

mario62 [17]

mass Hydrogen=9.376 g

<h3>Further explanation </h3>

Reaction

2H₂+O₂⇒2H₂O

mass H₂ = 10 g

mol H₂(MW=2 g/mol) :

10 : 2 = 5

mass O₂=5 g

mol O₂(MW=32 g/mol) :

5 : 32 = 0.156

O₂ limiting reactant

mol H₂: mol O₂ = 2: 1, so mol H₂ :

2 x 0.156 = 0.312

mol H₂ :

5 - 0.132 =4.688

mass of H₂ :

4.688 x 2 =9.376 g

<h3 />

7 0

3 years ago