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Serga [27]
3 years ago
13

Which is a quantitative observation A. 15 m long B. red color C. rough texture D. strong odor

Chemistry
1 answer:
ASHA 777 [7]3 years ago
6 0
A. 15 m long
Bescause it is a quantity
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4.2g of sodium bicarbonate is equivalent to how many moles of sodium bicarbonate
Mnenie [13.5K]
<span>The mass of one mole of sodium bicarbonate (aka NaHCO3) is equal to 1 * 22.99g/mol + 1 * 1.00g/mol + 1 * 12.01g/mol + 3 * 16.00g/mol = 83.91g/mol. From this, we can convert 4.2g of NaHCO3 to moles by dividing by 83.91g/mol, to get 0.050 moles of sodium bicarbonate.</span>
7 0
3 years ago
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According to "When Is a Planet Not a Planet?" scientists determined that Pluto was not a planet. What were the causes that led t
kap26 [50]
C.
D.
E.

These should be the main reasons. As Pluto was mainly categorized in dwarf planet for not being able to satisfy the last statement which states that it should have a fixed neighbourhood with other planets.
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3 years ago
How many neutrons are in a single atom of indium-115?
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3 years ago
Given the following equation, how many moles of Fe2O3 can be produced from 6.4 moles O2?
scoundrel [369]

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4.3 moles of Fe2O3

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The calculations are shown in the picture.

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3 years ago
S<br> SIO₂ +3C Sic +20o<br> Sic ? mass in grams<br> С c-
seraphim [82]

Answer:

26.74g

Explanation:

The equation of the reaction is;

SIO₂ + 3C --> SiC +2CO

From the balanced equation, the relationship between SiC and C is;

3 mol of C produces 1 mol of SiC

Converting mol to mass using; Mass = moles * Molar mass

Mass of SiC = 1 mol * 40.11 g/mol = 40.11g

This means;

3 mol of C produces 40.11g of SiC

2 mol of C produces xg of SiC

3 = 40.11

2 = x

x = 2 * 40.11 / 3 = 26.74g

6 0
3 years ago
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