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Morgarella [4.7K]
1 year ago
8

Write the value represented by 4.5x10-6 g

Chemistry
1 answer:
monitta1 year ago
6 0

the value represented by 4.5x10-6 g is 0.0000045 g it is a representation  in standard notation

To express enormous figures which are in standard notation like 1,300,000 or exceedingly minuscule quantities like 0.0000000000045, scientists use scientific notation. Scientific notation, also referred to as exponential form, is one of the earliest mathematical techniques. It is well regarded by practitioners. People use scientific notation to handle situations where numbers are too large or too small to be calculated easily. Scientists, engineers, and mathematicians all use this technique. where as standard notation is way writing numbers in normal decimal form. The scientific method id most convenient denoting numbers as the numbers will be either too big or too small.

To learn more about standard notation:

brainly.com/question/10253124

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If we add a catalyst to the following equation, CO + H2O + heat CO2 + H2, which way will the equilibrium shift?
Igoryamba

Answer:

No effect.

Explanation:

Hello,

In this case, considering the widely studied Le Chatelier's principle, we can realize that the factors affecting equilibrium are concentration, temperature and pressure and volume if the reaction is in gaseous phase and with non-zero change in the number of moles. In such a way, by adding a catalyst to given reaction will have no effect on the equilibrium direction.

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7 0
2 years ago
How many electrons will a metal generally have in its outer energy level?
Zarrin [17]

Answer:

Metals have one or two electrons in their outermost shell

C. 1-2

Explanation:

  • Metals have low ionisation energy because they easily looses the outermost electrons
  • They have only one- two electrons in the outer most shell.
  • They loose these electron to form charged species called cation.

4 0
3 years ago
A mole of oxygen and a mole of hydrogen (at STP) have all of the following in common EXCEPT
Drupady [299]

Answer:

Root mean squared velocity is different.

Explanation:

Hello!

In this case, since we have a mixture of oxygen and nitrogen at STP, which is defined as a condition whereas T = 298 K and P = 1 atm, we can infer that these gases have the same temperature, pressure, volume and moles but a different root mean squared velocity according to the following formula:

v_{rms}=\sqrt{\frac{3RT}{MM} }

Since they both have a different molar mass (MM), nitrogen (28.02 g/mol) and oxygen (32.02 g/mol), thus we infer that nitrogen would have a higher root mean squared velocity as its molar mass is less than that of oxygen.

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8 0
2 years ago
A piece of copper has a volume of 100.0cm^3 (3power) if the mass of the copper is 890g, what is the density of copper??
Bas_tet [7]
Density=mass/volume
Data:
mass=890 g
volume=100 cm³

Density=890 g/100 cm³=8.9 g/cm³

answer: the density of the copper is 8.9 g/cm³
6 0
3 years ago
Read 2 more answers
Will give brainliest if you answer quickly and correctly :)
AnnZ [28]
I think it’s I
Iodine has 53 protons and 74 neutrons
3 0
2 years ago
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