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LuckyWell [14K]
3 years ago
5

What must be true about two objects if heat is flowing between them?

Chemistry
2 answers:
Mkey [24]3 years ago
8 0

Answer:

The have to different temperature

Explanation:

Katarina [22]3 years ago
7 0

Answer:

The temperatures of the objects must be different

Explanation:

if heat is flowing between two objects, then the objects must be at different temperatures.

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Find the mass of a sample of methane (CH₄) if it contains 5.6x10²⁴ molecules of methane.
enyata [817]

Answer:

what do you mean by magnetic and sound energy

3 0
3 years ago
1) Escribe oraciones coherentes que incluyan los siguientes términos con los conceptos correspondientes:
UkoKoshka [18]

La respuesta correcta para esta pregunta abierta es la siguiente.

Estas son las oraciones apropiadas.

El carbón, el petróleo, y el gas natural son recursos naturales no renovables.

Estos generadores naturales de energía son considerados combustibles  fósiles que produce la mayor parte de hidrocarburos que se usan en el mundo. Sin embargo, estas reservas energéticas se están agotando porque son recursos naturales no renovables. Además, estos combustibles son altos generadores de contaminación como es el caso de las mareas negras.

Independientemente de estas ideas, es apropiado decir que los combustibles fósiles han sido fuertemente cuestionados por los ambientalistas y los científicos porque son causantes del llamado calentamiento global y del cambio climático.

Por esa razón, la sociedad y los expertos ambientalistas están pidiendo que los gobiernos comiencen a utilizar más energías alternativas y renovables como la energía solar y las turbinas de viento o energía eólica.

3 0
3 years ago
Has 7 electrons in the 4th level
mezya [45]
It's Bromine(Br-) Group 17 element that has 7 valence electrons on the fourth energy level.
6 0
4 years ago
Determine whether methylcyclohexane contains a chiral center. _____ How many different substituents do you count at atom
AveGali [126]

Answer:

methylcyclohexane does not possess a chiral center

Explanation:

A molecule is said to possess a chiral center if one or more of the atoms in the molecule is bonded to four different atoms or groups.

If we look at methylcyclohexane, none of the carbon atoms in the molecule is bonded to four different atoms or groups hence the molecule contains no chiral centers and will not exhibit optical isomerism.

So, methylcyclohexane has a plane of symmetry thus it is an achiral molecule.

3 0
3 years ago
Using the following equation how many grams of pure oxygen do you need to comsume 635.2g of glucose: C6H12O6 + 6O2 → 6CO2 + 6H2O
aalyn [17]

Answer:

677.76 g of oxygen needed.

Explanation:

Given data:

Mass of glucose = 635.2 g

Mass of oxygen needed = ?

Solution:

Chemical equation:

C₆H₁₂O₆  + 6O₂  →  6CO₂ + 6H₂O + energy

Number of moles of glucose:

Number of moles = mass/ molar mass

Number of moles = 635.2 g / 180.156 g/mol

Number of moles = 3.53 mol

Now we will compare the moles of glucose with oxygen.

                         C₆H₁₂O₆           :              O₂

                               1                  :               6

                             3.53              :           6×3.53 = 21.18 mol

Mass of oxygen:

Mass = number of moles × molar mass

Mass =  21.18 g × 32 g/mol

Mass = 677.76 g

4 0
3 years ago
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