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steposvetlana [31]
3 years ago
13

In order to expand agriculture and urban areas to meet increased demand for growing populations, water supplies often have to be

diverted. In three to five sentences, construct a potential chain of consequences for what could happen when water is diverted from large bodies like lakes and rivers.
thank u :]
Chemistry
1 answer:
VMariaS [17]3 years ago
7 0

answer:

lets say we have a big lake with a lot of animals and you want to move the water to somewhere else. A lot of animals and fish, frogs will have to find a new home!

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Write equations for the half-reactions that occur at the anode and cathode for the electrolysis of each of the following aqueous
nirvana33 [79]
For NaBr(aq) hydrogen gas is formed at the cathode. Hydrogen in water is reduced to hydrogen gas. For NaBr(aq), bromine, Br2(l), will be produced instead of oxygen gas at the anode. 

<span>For sodium sulfate hydrogen gas is formed at the cathode. Hydrogen in water is reduced to hydrogen gas. Oxygen gas will be produced at the anode. </span>

<span>Should someone suggest that sodium metal is formed at the cathode, rest assured that that can't happen. Sodium metal reacts with water to make Na+. </span>

<span>Lead(II) iodide is insoluble in water. Therefore, not much will happen since there is no electrolyte.</span>
7 0
3 years ago
What is a molecular Solid
Iteru [2.4K]

Question

what is a molecular Solid

Answer:

A molecular solid is a type of solid in which molecules are held together by van der Waals forces rather than by ionic or covalent bonds.

Explanation:

A molecular solid is a solid consisting of discrete molecules. The cohesive forces that bind the molecules together are van der Waals forces, dipole-dipole interactions.

8 0
3 years ago
How many grams of beryllium chloride will be consumed if 987.5 g of magnesium chloride is produced?
Savatey [412]
The  number   Beryllium  chloride  consumed  is  calculated  as  follows

write  equation  for    reaction

that  is  BeCl2  + Mg  ----->  MgCl2  +Be

find  the  moles  of   MgCl2  produced

moles  =mass/molar  mass  of  MgCl2

=  987.5g/95 =  10.39 moles
by   use  of  mole  ratio  between   BeCl2  to  Mgcl2  which  1:1  therefore  the  moles  of  BeCl2  is  also   10.39moles

mass  of  BeCl2  =  moles  x  molar  mass

that  is  10.39  x80  =  831.2
8 0
3 years ago
A gas is contained in a thick-walled balloon. When the pressure changes from 39.1 bar to 87.0 bar the volume changes from blank
lidiya [134]

Answer: -

1.34 L

Explanation: -

Initial Pressure P 1 = 39.1 bar

Initial Temperature T 1 = 643 K

Let the initial volume be V 1.

Final pressure P 2 = 87.0 bar

Final temperature T 2 = 525 K.

Final volume V 2 = 0.492 L

Using the equation

\frac{P1 V 1}{T1} = \frac{P 2 V 2}{T2}

V 1 = \frac{P2 V2 T1}{P 1 T2}

Plugging in the values

We have

V 1 = 87 bar x 0.492 L x 643 K / (39.1 bar x 525 K)

= 1.34 L

Thus, a gas is contained in a thick-walled balloon. When the pressure changes from 39.1 bar to 87.0 bar the volume changes from 1.34 L to 0.492L and the temperature changes from 643K to 525K

4 0
4 years ago
Read 2 more answers
The chemical definitions of acids and bases for Arrhenius are:
Cloud [144]

Answer:

Explanation:

Arrhenius defined an acid as a substance that interacts with water to produce excess hydrogen ions in aqueous solution.

A base is a substance which interacts with water to yield excess hydroxide ions, in an aqueous solution according to Arrhenius.

Bronsted-Lowry theory defined an acid as a proton donor while a base is a proton acceptor.

6 0
3 years ago
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