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Chemistry

1 answer:

denpristay [2]3 years ago

8 0

Answer:

It's Brisbane.

Remember latitude and longitude.

27 degrees south is on the second bottom of the map (cities located beneath the equator). Also, 153 degrees east is located on the eastern side of the prime meridian. When pinpointing the location with these coordinates, you will find Brisbane

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Hydrogen and nitrogen react to produce ammonia gas as shown in the following chemical

DerKrebs [107]

Explanation:

$31.5 \: g \: aommnia \: \times \: \frac{1 \: mol \: ammonia}{8 \: g \: ammonia \: } \: \times \frac{3 \: mol \: hydrogen}{2 \: mol \: ammonia} \: \times \frac{1 \: g \: hydrogen}{1 \: mol \: hydrogen} = \: 5.90625 \: g \: hydrogen \: must \: react \:$

5 0

3 years ago

Why do ashes from fire have a much lower mass than the wood that was burned

tatyana61 [14]

Answer:

because when you burn some wood you don't just get ash, you also get energies like thermal energy(heat), light and also some gaseous compound are produced (like CO2, SO2 etc) for the combustion reaction(a reaction where something is burnt in presence of O2). So the energy reserved in the wood are transformed into heat, light, other compounds and some turn into ash.

8 0

3 years ago

The arrows in the chart below represent phase transitions.

Lana71 [14]

Answer:

a. 1,2,and 3.

Explanation:

When something turns liquid, e.g. metal, you need to heat it. When something turns gas, e.g. water, you need to heat it. And when something goes directly from solid to gas, e.g. dry ice, carbon dioxide, you need to add heat to it. hope this helps! Please mark brainiest.

4 0

3 years ago

Write the molecular formula of glucose

MariettaO [177]

The molecular formula of glucose:
C₆H₁₂O₆

6 0

3 years ago

What is the percent of Cr in Cr2O3

IgorLugansk [536]

The percentage of Chromium in Chromium Oxide is calculated as follow,

Step 1:
Calculate Molar mass of Cr₂O₃,
Cr = 51.99 u
O = 16 u
So,
2(51.99) + 3(16) = 103.98 + 48 = 151.98 u

Step 2:
Secondly divide molar mass of only chromium with total mass of Cr₂O₃ and multiply with 100.
i.e.
= $\frac{103.98}{151.98}$ × 100

= 68.41 %
So, the %age composition of chromium in chromium oxide is 68.41 %.

5 0

3 years ago

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