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3 years ago

What is the total pressure in mm Hg?

Chemistry

1 answer:

Alekssandra [29.7K]3 years ago

4 0

Answer:

1.5 atm

Explanation:

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jin has four colorful glass bottles on his windowsill. one is red, one is violet, one is green, and one is yellow. the light tha

Over [174]

The red bottle would have the lowest frequency because red light has the longest wavelengths. The light passing through the violet would have the highest frequency because its wavelengths are the shortest.

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4 years ago

Read 2 more answers

Given the two half-reactions, what must be done in the next step before the reaction can be balanced? Au3+ --> Au I- --> I

Artyom0805 [142]

Answer:

The balance equation is

$2Au^{+3} + 6I^{-}$ → $2Au + 3I_{2}$

Explanation:

first, we have to make sure that the atoms are balanced

$Au^{+3}$ → $Au^{}$

$2I^{-}$ → $I_{2}$

then we proceed to balance charges of each half-reaction

$Au^{+3} + 3e^{-}$ → $Au^{}$

$2I^{-}$ → $I_{2}$ $+ 2e^{-}$

Now we multiply the half-reactions to match the number of electrons in each one

( $Au^{+3} + 3e^{-}$ → $Au^{}$ )x2

( $2I^{-}$ → $I_{2}$ $+ 2e^{-}$ )x3

and now we do the sum of the half-reactions

2 $Au^{+3} + 6e^{-}$ → 2 $Au^{}$

$6I^{-}$ → 3 $I_{2}$ $+ 6e^{-}$

$2Au^{+3} + 6I^{-}$ → $2Au + 3I_{2}$

note: the only atom that needed to be balanced was I

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4 years ago

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Match each of the substances with the expected pH of the resulting solution when they are added to neutral water. Determine if a

Tamiku [17]

To determine the expected pH of the resulting solution of the following substances, create a balanced chemical equation of their ionization in water:

HI

HI + H2O ---> H+ + I-

It completely dissociates into H+ and I-. Due to the presence of the Hydronium Ion, the solution is acidic.

KBr

KBr + H2O ----> HBr + KOH

The salt KBr is formed by a strong base and a weak acid, therefore, the solution it forms with water is basic.

LiOH

LiOH + H2O ----> Li+ + OH-

It dissociates completely in water, turns into Li+ and OH-. Due to the presence of Hydroxide Ion, the solution becomes basic.

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3 years ago

Please help I’ll mark you as brainliest if correct!

Brums [2.3K]

Answer:

Explanation:

Gas molecules are diatomic which means it usually comes in 2.

So, H2(g)+O2(g) is H2O (l)

The first one is OH(hydroxide, not water)

Second one is not gas(not diatomic)

Answer is C.

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3 years ago

Cynthia constructed a small device called a catapult shown below.

Andrew [12]

Answer:

Awnser: D,Newtons second law of motion

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4 years ago