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vazorg [7]
3 years ago
11

How the atoms in diagram A differ from those in diagram D

Chemistry
1 answer:
umka2103 [35]3 years ago
3 0

Answer:

  • The atoms in 'A' are combined to form a diatom. As such the molecule is homogenous.
  • The atoms in 'D' are combined to form a molecule/compound that is heterogeneous (all the molecules in the compound are not the same).
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If 21.8 g of NO and 13.8 g of O2 are used to form NO2, how many
mario62 [17]

Answer:

Explanation:

1 . Write the chemical equation.

2 . Calculate the moles of product from the first reactant.

3 . Calculate the moles of product from the second reactant.

4 . Identify the limiting reactant and the excess reactant.

5 . Calculate the mass of excess reactant used up.

6 . Calculate the mass of unused excess reactant.

7 . Calculate the mass of limiting reactant needed to react with the 8 .  unused excess reactant.

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4 years ago
An element has an atmomic number of 68. The number of protons and electron in a neutral atom of the element are?
Bess [88]

Answer:

Explanation:

An element whose atomic number is 68 (number Z), has 68 electrons and 68 protons. According to the periodic table it corresponds to the element Erbium (Er), whose mass number (A) is 167. The number of neutrons is 167-68 = 99.

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4 years ago
How many seconds are there in 2500 years? (Assume 1 year = 365 days.)
drek231 [11]
Work your way from years to months to days to hours to minutes to seconds.
6 0
3 years ago
A scientist observes hot water erupting from a vent in the Earth.What most likely caused the water to rise and erupt from the ve
Scrat [10]

Answer/Explanation:

A geyser is hot water erupting from a vent in the earth. Geysers are somewhat rare and occur in certain parts of the earth. Underneath, there are hidden chambers that provide constant flows of water. Sometimes when the tectonic plate of the earth move, it leaves gaps in between the hot earth's inner core and the ground. The magma inside is able to heat up the water from the earth. Since hot particle tend to rise, the water explodes out of the vent with such power from the heat.

7 0
3 years ago
Read 2 more answers
How much heat, in joules, is required to raise the temperature of 8.2 g of
Minchanka [31]

Answer:

113.8 J.

Explanation:

The following data were obtained from the question:

Mass (M) = 8.2 g

Change in temperature (ΔT) = 3.32 °C

Specific heat capacity (C) = 4.18 J/gºC

Heat required (Q) =..?

The heat required to raise the temperature of the water by 3.32 °C

can be obtained as follow:

Q = MCΔT

Q = 8.2 × 4.18 × 3.32

Q = 113.8 J

Therefore, the amount of heat required to raise the temperature of the water is 113.8 J.

7 0
3 years ago
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