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Harrizon [31]
3 years ago
12

Number 2 I don't get what the question is asking

Chemistry
1 answer:
Rus_ich [418]3 years ago
7 0
Wow thats pretty hard its asking how many is in each of those
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Perform the following operationand express the answer inscientific notation.7.00x10^5 - 5.00x10^4
11Alexandr11 [23.1K]

Taking into account the scientific notation,  the result of the subtraction is 6.5×10⁵.

<h3>Scientific notation</h3>

First, remember that scientific notation is a quick way to represent a number using powers of base ten.

The numbers are written as a product:

a×10ⁿ

where:

  • a is a real number greater than or equal to 1 and less than 10, to which a decimal point is added after the first digit if it is a non-integer number.
  • n is an integer, which is called an exponent or an order of magnitude. Represents the number of times the comma is shifted. It is always an integer, positive if it is shifted to the left, negative if it is shifted to the right.
<h3 /><h3>Subtraction in scientific notation</h3>

You want to subtract two numbers in scientific notation. It should be noted that when the numbers to be added do not have the same base 10 exponent, the base 10 power with the highest exponent must be found. In this case, the highest exponent is 5.

Then all the values ​​are expressed as a function of the base 10 exponent with the highest exponent. In this case: 5.00×10⁴=0.500×10⁵

Taking the quantities to the same exponent, all you have to do is subtract what was previously called the number "a". In this case:

7.00×10⁵ - 0.500×10⁵= (7.00- 0.500)×10⁵= 6.5×10⁵

Finally, the result of the subtraction is 6.5×10⁵.

Learn more about scientific notation:

brainly.com/question/11403716

brainly.com/question/853571

#SPJ1

3 0
2 years ago
Pls Help first correct one will get Brainliest
sergiy2304 [10]

Answer: It should be 100m

4 0
3 years ago
When a salt is added to a polar solvent like water, the ions interact with the solvent molecules via ____ , which overcome the f
AveGali [126]

Answer:

ion - dipole interactions

Explanation:

Ion - dipole interactions -

It refers to the interaction between the ion and a dipole , ( any species which is capable to get produce slight positive and slight negative charge ) , is known as ion - dipole interactions .

Water is a polar compound , and due to more electronegative oxygen atom , it can have slight negative charge and correspondingly , hydrogen atom can attain slight positive charge , and thereby generates a dipole .

Now , from the question,

The salt when dissolved in water , breaks down to ions , cations and anion , and these ions interacts with the polar water molecules , giving rise to the ion - dipole interactions .

8 0
3 years ago
Can two different samples of the same substance have different physical properties? Chemical properties?
lina2011 [118]

yes, because they are combined in different ratios.
4 0
3 years ago
Read 2 more answers
Assuming that pressure and temperature are constant, how many liters of oxygen gas will be required to produce 0.160 L of nitrog
LuckyWell [14K]

Answer:

0.24 L of oxygen gas will be required to produce 0.160 L of nitrogen gas.

Explanation:

From the reaction, 3 moles of oxygen react with ammonia to produce 2 moles of nitrogen gas

So, 3 moles of 02 = 2 moles of N2

Since I mole of a gas occupies 22.4dm^3 or 22,4 L of the gas

3 * 22,4L of O2 produces  2 * 22.4 L of N2

67.2 L of O2 produces 44.8 L of N2

( 67.2 * 0.160 / 44.8 ) L of O2 will produce 0.160L of N2

10.752/ 44,8 L = 0.24 L of O2 will produce 0.160 L of N2

0.24 L of oxygen gas will be required to produce 0.160 L of nitrogen gas.

8 0
4 years ago
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