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lbvjy [14]
4 years ago
11

Which sentence is a scientific statement?

Chemistry
2 answers:
Evgen [1.6K]4 years ago
8 0

Answer:

The answer is C

Explanation:

D is a hypothesis, not a scientific statement. A and B are both left to the individual's subjective tastes. C is the only statement out of these 4 that would have objectifiable evidence and a means of determining if true.

LekaFEV [45]4 years ago
5 0

Solution: Sentence D is a scientific statement.

Scientific statement is a statement that defines the science behind any situation. There should be any experimental result or observation to state any scientific statement. Also, the statement should be accepted by considering other scientific aspects.

Here, statement A can not be a scientific statement as different aromas of cooked food are liked by different people. Any one can find aroma of cooked food in copper better than the ceramic pot.

Thus, the statement can be proved wrong easily.

Statement B can not be a scientific statement as people can find the taste of normal water (without ice cubes) better than the ice cold water.

Statement C is not a scientific statement as there is no science behind watching baseball or ice hockey, it depends on the liking of today's people.

Statement D is a scientific statement because this can be scientifically proved.  

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katen-ka-za [31]

Answer:

{ \tt{1 \: mole = 6.02 \times  {10}^{23} \: molecules }} \\ { \tt{6.0 \: moles = (6 \times 6.02 \times  {10}^{23}) \: molecules }} \\  = { \bf{3.612 \times  {10}^{24}  \: molecules}}

8 0
3 years ago
What is the molarity of a solution prepared by dissolving 54.3 g of Calcium nitrate
Ostrovityanka [42]

Answer: 40 + 2x14 + 6x16 = 164g/mole

54.3g x [1mole / 164g] = 0.331moles

355mL x 1L / 1000mL = 0.355L

molarity = 0.331moles / 0.355L =

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Explanation:

5 0
3 years ago
The concentration of pb2+ in a solution saturated with pbbr2(s) is 2.14 ✕ 10-2 m. calculate ksp for pbbr2.
Ugo [173]
Concentration = 2.14 âś• 10-2 m 
For [Br-], there are 2 ions so 2 x 2.14 x 10^-2 =4.28 x 10^-2  
Ksp = [Pb][Br]^2 = 2.14 âś• 10-2 x (4.28 x 10^-2 )^2 = 39.20 x 10^-6 
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3 0
4 years ago
Read 2 more answers
Which has the lowest freezing point?
Volgvan

Answer:

Mercury has the lowest freezing point for metals, but helium takes the winner for all substances.

Explanation:

5 0
3 years ago
how many liters of radon gas would be in 3.43 moles at standard temperature and pressure (273K and 100 kPa)?
bagirrra123 [75]

Answer:

V = 0.0007678398L

Explanation:

Given parameters:

Number of moles of gas = 3.43moles

Temperature = 273k

pressure = 100kPa = 100000Pa

Unknown:

Volume of gas = ?

Solution

The gas is at standard temperature and pressure, this implies we can use the ideal gas equation to solve for the unknown.

Mathematically, the law is expressed as:

                               PV = nRT

The unknown here is the Volume, V. We know the other parameters.

       P = pressure on the gas

      n = number of moles

       R = gas constant=0.082

       T = temperature

now, we have to make V the subject of the expression:

                   V = \frac{nRT}{P}

                   V = \frac{3.43 x 0.082 x 273}{100000}

                   V = 0.0007678398L

8 0
3 years ago
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