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Sergeeva-Olga [200]
3 years ago
9

I2 is an example of a

Chemistry
2 answers:
zavuch27 [327]3 years ago
7 0

Answer:

Iodine

Explanation:

Free_Kalibri [48]3 years ago
5 0

Answer:

number

Explanation:

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A piece of iron is heated to 120'C then placed in a calorimeter containing 50g of water. The water temperature is raised from 30
Lana71 [14]

Answer:

Mass of iron = 59.375 gm

Explanation:

Calories ( or joules) are added to the water by the hot steel so at the endpoint they are BOTH at 40 C

 The water gains:

     4.18  j/g-C  * 50 * (40-30 C) = 2090 j

The steel gave up 2090 j going from 120 to 40 C

2090 = .44 j/g-C  * m * (120-40)    solve fro m = 59.375 gm

3 0
2 years ago
How many liters of oxygen gas can react with 84.0 grams of lithium metal at standard temperature and pressure? Show all of the w
ddd [48]
From the equation:
4mol Li react with 1 mol O2
Molar mass Li = 7g/mol
mol in 84g Li = 84/7 = 12 mol Li
From the equation - 12 mol Li will react with 3 mol O2

At STP 1 mol O2 has volume = 22.4L
<span> At STP 3 mol O2 has volume = 3*22.4 = 67.2L O2 gas will react. </span>
5 0
3 years ago
Read 2 more answers
Balance in basic solution: O2(g) + Cr³+ (aq) → H₂O2 (1) + Cr₂O7²- (aq)
likoan [24]

cr2o72+H2o2-(r3+o2)

Explanation:

r62o72+H2o2-(r3+o2)

3 0
3 years ago
Which is the largest thing in the world???????????
Ksivusya [100]

<em>S</em><u><em>equoia trees</em></u> are the largest thing in the world or planet

thanx

<u>h</u><u><em>ope it helps you mark as brainlest</em></u>

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3 years ago
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Which atoms are most likely to form + 1 ion and -2 ion respectively?
yarga [219]
D. Ba and F. Took the test
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