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lakkis [162]
2 years ago
11

2. Tania went outside and made two observations of the Moon that were several days apart. Her

Chemistry
1 answer:
Marizza181 [45]2 years ago
6 0

Answer:

I am very confused who is diagram.

Explanation:

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D. They are malleable.


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The same chemistry student has a weight of 155lbs what is the student weight in grams
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What data should be plotted to show that experimental concentration data fits a first-order reaction? A) 1/[reactant] vs. time B
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Answer:

C) In[reactant] vs. time

Explanation:

For a first order reaction the integrated rate law equation is:

A = A_{0}e^{-kt}

where A(0) = initial concentration of the reactant

A = concentration after time 't'

k = rate constant

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7 0
3 years ago
PLEASEEEE HELP MEEEEE
fiasKO [112]

Answer:

3.82 x 10²¹ molecules As₂O₃

Explanation:

To find the amount of molecules arsenic (III) oxide (As₂O₃), you need to (1) convert kg to lbs, then (2) convert g As₂O₃ to moles As₂O₃ (via molar mass), and then (3) convert moles to molecules (via Avogadro's number).

1 kilogram = 2.2 lb

Molar Mass (As₂O₃): 2(74.992 g/mol) + 3(15.998 g/mol)

Molar Mass (As₂O₃): 197.978 g/mol

Avogadro's Number:

6.022 x 10²³ molecules = 1 mole

0.0146 g As₂O₃            1 kg                  189 lb
------------------------  x  ---------------  x  ------------------  x   ................
         1 kg                     2.2 lb          

       1 mole                6.022 x 10²³ molecules
x  ------------------  x  ---------------------------------------  = 3.82 x 10²¹ molecules As₂O₃
      197.978 g                        1 mole

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A gamma ray primarily consists of pure energy and no mass. TRUE or FALSE
myrzilka [38]
This statement is true. 
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2 years ago
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