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Verdich [7]
3 years ago
14

Please help me? tysvm!!! :DDD

Chemistry
2 answers:
egoroff_w [7]3 years ago
7 0

Answer:

THe Answer Is True

lara31 [8.8K]3 years ago
5 0

Answer:

This is true! :)

Explanation:

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If the following elements were to combine with each other, choose which demonstrate the Law of Multiple Proportion. Select all t
Marysya12 [62]
Answer is:<span> Z:X = 7:1 and </span><span>Y:X = 11:1.

</span>Law of multiple proportions or Dalton's Law said that <span>the ratios of the masses of the second element which combine with a fixed mass of the first element will be ratios of small whole numbers. 
In this example ratios are whole numbers, </span><span>A:Z = 2.5 : 1 and A:Z = 2.2 : 1 are not whole number ratios.</span><span>

</span><span>

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6 0
3 years ago
Consider the reaction below.
Luba_88 [7]
Hey there!

I attached a screenshot of my chemistry notes from this year on equilibrium constants in particular. Feel free to reference this in the future if you wish. 

Based on the information in my attachment, you could construct your constant like this:

K_{eq} =  \frac{[CaO][CO_{2}]}{[CaCO_{3}]}

I don't think it matters which order your reactants or products are in as long as you have them on the top and bottom where they need to be, so your answer will be B. 

Hope this helped you out! :-)

4 0
3 years ago
Which statement about Niels Bohr's atomic model is true?
cupoosta [38]

Answer:

o

Explanation:

6 0
3 years ago
Read 2 more answers
What the answer I’m on a midterm and can’t seem to find it help
Sonja [21]

Answer:

Sorry I’m not rlly sure but maybe the 2nd or the last

Explanation:

8 0
3 years ago
4. The reaction of silver nitrate and potassium bromide yields silver bromide and potassium nitrate. If
Hatshy [7]

Answer:

1.) AgNO₃

2.) 0.563 moles AgBr

Explanation:

The limiting reagent is the reagent that is used up completely during a reaction. It can be identified by calculating which reactant produces the smallest amount of product. This can be done by determining the number of moles of each reagent (via molarity conversion). and then converting it to moles of the product (via mole-to-mole ratio).

AgNO₃ (aq) + KBr (aq) ---> AgBr (s) + KNO₃ (aq)

Molarity (M) = moles / liters

100 mL = 1 L

AgNO₃

45.0 mL / 100 = 45.0 L

1.25 M = ? moles / 0.450 L

? moles = 0.563 moles

KBr

75.0 mL / 100 = 0.750 L

0.800 M = ? moles / 0.750 L

? moles = 0.600 moles

In this case, there is no need to use the mole-to-mole ratio because all of the coefficients are one in the reaction (the amount of the limiting reagent used is the same amount of product produced). Since AgNO₃ produces the smaller amount of product, it is the limiting reagent.

4 0
2 years ago
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