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Rama09 [41]
4 years ago
6

Please show me the easiest way to memorize the 1st 20 elements​

Chemistry
1 answer:
dybincka [34]4 years ago
8 0

Answer:

MAKE flashcards

Explanation:

Study them then get some one to test you. it works for me

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How many grams of H2O would be made from 7.9 moles of H2? (Round to one decimal place)
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Answer:

2.01588 grams

Explanation:

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3 years ago
A. At STP, what is the volume of 708 mol of nitrogen gas? 708 mol = 708 mol X L B. A sample of hydrogen gas occupies 14.1 L at S
elena-14-01-66 [18.8K]

Answer:

A. 15859.2 L or 15900 L

B. 0.629 mol

Explanation:

At STP, one mole is equal to approximately 22.4 L

L or mL is volume, so you are attempting to solve for L or mL.

A.

708 mol x (22.4 L/1 mol) = 15859.2 L (w/ significant figures included - 15900 L)

B.

(14.1 L) x (1 mole/ 22.4 L) = 0.629 mol.

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3 years ago
Electronic configuration for Cr, Cu, Cr+2, Cu+2, Mn+2
Zanzabum
Chromium (Cr): 2, 8, 8, 6
Copper (Cu): 2, 8, 8, 11
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Manganese+2 (Mn+2): 2, 8, 8, 5
8 0
4 years ago
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The very common mineral shown in this photograph is commonly a pink- to cream-colored mineral with wavy, light-colored lines. it
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The very common mineral shown in the figure that is referred in this problem that is commonly a pink- to cream-colored mineral with wavy, light-colored lines and does not effervesce would be feldspar. It make up about 41 percent weight of the Earth's crust. It is a group of rocks that contains tectosilicate compounds.
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3 years ago
Which statements describe a mushroom’s niche? Check all that apply.
amid [387]

Answer:

i think it is all of the above

Explanation:

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7 0
3 years ago
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