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Elina [12.6K]
3 years ago
6

What is the density of an unknown object with a mass of 225g and a volume of 500cm3

Chemistry
1 answer:
andrezito [222]3 years ago
3 0

Answer:

0.45 g/cm3

Explanation:

Density = Mass/Volume

225g/500cm3=0.45cm3

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Comparing the characteristics of homogeneous and heterogeneous<br>​
Sergeu [11.5K]

answer: A homogeneous mixture has the same uniform appearance and composition throughout. Many homogeneous mixtures are commonly referred to as solutions. A heterogeneous mixture consists of visibly different substances or phases.

4 0
3 years ago
A mixture of 117.9 g of P and 121.8 g of O, reacts completely to form P4O6 and P4O10. Find the masses of P4O6 and P4O10
Alex17521 [72]

Answer:

Mass of P4O6=103.4

            P4O10=133.48

Explanation:

Balanced reaction is:

8P +8O_{2}  ⇒P_{4} O_{6} +P_{4} O_{10}

Both reactant completely vanishes as equivalent of bot are equal.

Moles of P=\frac{117.9}{31} =3.80

Moles of O_{2} =\frac{117.9}{31} =3.80

No. of moles of formed product are equal and is \frac{1}{8}th of mole of any of reactant.

Thus weight of  P_{4} O_{6} =\frac{3.80}{8}×220 ≈103.41

        weight of  P_{4} O_{10} =\frac{3.80}{8}×284 ≈133.48

4 0
3 years ago
Choose the products that complete the reaction . The chemical equation may not be balanced . Al+H 2 SO 4 ? Al 2 (SO 4 ) 3 +H 2 O
alexandr402 [8]

Answer: Al2 (SO4)3 + H2

Explanation:

option C

5 0
3 years ago
Which of the following best defines balanced forces?
Mars2501 [29]

Answer:

Balanced forces are forces that act in opposite directions and cancel each other out

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6 0
2 years ago
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Explain how do you would count the sig figs in the following number, 0.00340670, and what is
loris [4]

Answer:

The zeros in front of the 3 show where the decimal is. Then start counting at the 3 to the right. There are 6 sig figs.

Explanation:

3 0
3 years ago
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