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sveticcg [70]
3 years ago
12

Look at the image below:

Chemistry
1 answer:
skad [1K]3 years ago
5 0
The correct option is this: FIGURE II AND FIGURE IV ARE BOTH COMPOUNDS.
Figure two and figure four have components that are of different colors, this means that different atoms had combined together to form a compound.

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How many grams of iron oxide, Fe2O3 will be produced if 165 g of O2 gas is supplied? (follow the same steps as mol to mol, only
forsale [732]

Answer:

m_{Fe_2O_3}=549gFe_2O_3

Explanation:

Hello there!

In this case, according to the given chemical reaction for this problem about stoichiometry:

4Fe+3O_2\rightarrow 2Fe_2O_3

Whereas there is a 3:2 mole ratio of oxygen (molar mass = 32.0 g/mol) to iron (III) oxide (molar mass = 159.69 g/mol) and therefore, the correct stoichiometric setup is:

m_{Fe_2O_3}=165gO_2*\frac{1molO_2}{32.00gO_2}*\frac{2molFe_2O_3}{3molO_2} *\frac{159.69gFe_2O_3}{1molFe_2O_3}  \\\\m_{Fe_2O_3}=549gFe_2O_3

Regards!

8 0
3 years ago
___________________ is a substance that reduces surface tension (Ex. Soap)
Daniel [21]

Answer:

Surfactant. Surfactant, also called surface-active agent, substance such as a detergent that, when added to a liquid, reduces its surface tension, thereby increasing its spreading and wetting properties

Explanation:

6 0
3 years ago
Express the following in scientific notation:<br><br> 1. 158000 km<br> 2. 0.000009782 L
slamgirl [31]

Answer:

1.58x10^5km

9.782x10^-6

Explanation:

Please Brainlist

6 0
3 years ago
Which mixture can be classified as a homogeneous mixture?. . A.. salad dressing. . B.. soil. . C.. tap water. . D.. sand
melamori03 [73]
A homogeneous mixture is a mixture <span>which has uniform composition and properties throughout - it is identical in its every part. So, having this in mind, the correct answer is C. tap water - </span><span>even though it may have different levels of dissolved minerals and gases.</span>
7 0
3 years ago
Read 2 more answers
(e)
mariarad [96]

Answer:

3.82 × 10 ^-23 g

Explanation:

6.02 x 10^23atoms = 1 mole of sodium

1 atom = 1/(6.02 x 10^23) mole

mass = mole × molar mass

= 1/(6.02 x 10^23) × 23

= 3.82 × 10 ^-23 g

8 0
3 years ago
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