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zvonat [6]
3 years ago
10

Plz Answer all three questions thx ;)

Chemistry
1 answer:
rosijanka [135]3 years ago
6 0
How do scientist communicate their results and conclusions?
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Which sequence contains elements listed from most reactive<br> to least reactive?
maxonik [38]

Answer:

Transition metals, alkali metals, alkaline earth metals Transition metals - Middle of the periodic chart, only average reactivity. alkali metals - As mentioned above, very reactive. Bad choice, going from lower reactivity to higher reactivity.

Hope this answer is right!

6 0
3 years ago
_A1Br3+_K=_KBr+_A1<br> fill in the correct coefficients.
Nataly_w [17]
1 A1Br3 + 3 K = 3 KBr + 1 A1
3 0
3 years ago
How many moles of Fe2O3 will be produced from a 18.0 grams of Fe
Dennis_Churaev [7]

Answer:

The answer to your question is 0.113 moles of Fe₂O₃

Explanation:

Data

moles of Fe₂O₃ = ?

mass of Fe₂O₃ = 18 grams

Process

1.- Calculate the molar mass of Fe₂O₃

Fe₂O₃ = (56 x 2) + (16 x 3)

          = 112 + 48

          = 160 g

2.- Use proportions to solve this problem. The molar mass is equivalent to 1 mol.

                   160 g of Fe₂O₃ --------------- 1 mol

                     18 g of Fe₂O₃ ---------------- x

                            x = (18 x 1)/160

                           x = 0.113 moles of Fe₂O₃

6 0
2 years ago
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What are Dobereiner's Traids ?​
nikitadnepr [17]

Answer:

In Chemistry, Dobereiner triads are defined as, any of several sets of three chemically same elements, the atomic weight of one, which is nearly equal to the mean of the atomic weights of the other two elements.

7 0
2 years ago
Ms. Garcia's science students are studying scale models. For her science project, Sarah has decided to make a scale model of the
strojnjashka [21]

Answer:

D. 109 cm

hope this helped :)

8 0
3 years ago
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