3 years ago

What is the mass of 0.572 moles of Al?

1 answer:

5 0

Answer: 15.433704

Use the periodic table to check the atomic mass, this is the number of grams per mole → 1 mole of Aluminum is 26.982 g

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Find the final product for: Li + Br and show work.

miskamm [114]

Lithium is atomic number 3, so it has valency 1

While, Bromine is atomic number 35, and has valency 1

Lithium has an extra electron while Bromine need an electron, since they both need and have one electron, the form

LiBr (Lithium Bromide) where Li is +ve charged and Br is -ve charged

Happy to help :)

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3 years ago

Tellurium is a period 5 chalcogen. Selenium is a period 4 chalcogen. If the only factor affecting ionization energies was the nu

notsponge [240]

Answer:

yes

Explanation: took quiz

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3 years ago

Calculate the mass of magnesium oxide formed when 3.0 grams of magnesium reacts with excess oxygen.

BlackZzzverrR [31]

Mg+O2=MgO
24 g. = 40 g
3 g. = x
$x = \frac{3 \times 40}{24} \\ x = 5 \: g$

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3 years ago

At one time in the Earth’s history, many people thought the world was flat. Which best explains why the model of the Earth is no

GenaCL600 [577]

Answer:

<u>Models are limited by science - the more that was discovered, the better the model could be made.</u>

Explanation:

Models in science are meant to represent things in science. Since science controls the reliability of a model, when science changes, so does the model. Otherwise the model would be pseudoscientific.

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4 years ago

Borane (BH3) adds to alkenes to form an alkylborane. In the first box draw the mechanism arrows, and in the second box draw the

OLEGan [10]

Answer:

The reaction when the Borane (BH3) is add to an alkene and form an alkylborane is shown below.

Explanation:

The boron of the borane does not have extra electron pairs, in this way the double bond of the alkene attacks the boron and the hydrogen belonging to the borane adheres to the carbon that is more substituted, thus forming an alkyl borane.

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3 years ago