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Strike441 [17]
3 years ago
11

Help plzzzzzzz ASAP!

Chemistry
2 answers:
Agata [3.3K]3 years ago
8 0
I am going to say C. it has to do with the angles
kaheart [24]3 years ago
3 0
The index of refraction is the speed of light in a material so the answer is c

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Typically, a solid chloride unknown (not the AgCl product) for analysis is dried in an oven to remove absorbed water before the
tatyana61 [14]

Answer:

%Cl would be too high if not dried.

Explanation:

Cl (chlorine) is a liquid. During the process of drying AgCl, the chlorine particles evaporate and chlorine is lost.

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3 years ago
Is hydrogen a molecule or compound
Ainat [17]
It is a molecule because hydrogen is an element.
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Calculate the number of moles found in 3.045x1024 atoms of helium.<br><br> PLS HELP
Kisachek [45]

Explanation:

so for this u have to use this equation where

Moles = number of particle/6.02×10^23

= 3.045 × 10^24/6.02×10^23

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4 0
2 years ago
How many moles of water are in 1/4 cup of water
il63 [147K]

Answer:

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5 0
3 years ago
Read 2 more answers
if 45.0 ml of 1.50 M Ca(OH)2 are needed to neutralize 25.0 ml of HI of unknown concentration, what is the molarity of the HI?
ipn [44]

Answer:

M of HI = 5.4 M.

Explanation:

  • We have the rule: at neutralization, the no. of millimoles of acid is equal to the no. of millimoles of the base.

<em>(XMV) acid = (XMV) base.</em>

where, X is the no. of (H) or (OH) reproducible in acid or base, respectively.

M is the molarity of the acid or base.

V is the volume of the acid or base.

<em>(XMV) HI = (XMV) Ca(OH)₂.</em>

For HI; X = 1, M = ??? M, V = 25.0 mL.

For Ca(OH)₂, X = 2, M = 1.5 M, V = 45.0 mL.

<em>∴ M of HI = (XMV) Ca(OH)₂ / (XV) HI</em> = (2)(1.5 M)(45.0 mL) / (1)(25.0 mL) = <em>5.4 M.</em>

6 0
4 years ago
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