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stellarik [79]
3 years ago
15

Scientific knowledge

Chemistry
2 answers:
Cloud [144]3 years ago
8 0

Answer:

The US surgeon general's 1964 report declared that smoking cigarettes was linked to cancer

The average global temperature of the Earth has increased by almost two degrees in the last century.

Explanation:

dimaraw [331]3 years ago
5 0

Answer:

  • The US surgeon general's 1964 report declared that smoking cigarettes was linked to cancer .
  • The average global temperature of the Earth has increased by almost two degrees in the last century.

Explanation:

An easy way to differentiate science from pseudoscience is to know that pseudoscience does not have studies to prove it, but science is proven by several scientific and proven studies.

No matter how much you research about a particular pseudoscience and your studies, you will never find anything completely reliable. Many give examples of people who have been cured, such as Homeopathy. However, no study is able to prove that it was precisely the medicine that made the effect, and not the psychological or other factors not taken into account in the study. Every science is proven with countless studies! Medicines have more than concrete evidence that they work.

We can all believe in pseudoscience, as it can only be misunderstood. No one is the owner of the truth. The important thing is to keep in mind that you believe in something that is not proven, so you cannot defend it with valid arguments.

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How many molecules are in 643.21 grams of Mg3(PO4)2?
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Answer:

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4 0
3 years ago
Which of the following is an example of a compound?<br><br> CaCl2<br><br> Na<br><br> Nd<br><br> Cu
madam [21]
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5 0
3 years ago
A sample of a compound contains 32.0 g C and 8.0 g H. Its molar mass is 30.0 g/mol. What is the compound’s molecular formula
Grace [21]
The compound's molecular formula is C2H6. This is obtained by:
  
            mass             moles               divided by smallest moles
C          32g         32/12 = 2.67                                 1
H           8g           8/1.01 = 7.92                        approx. 3

Next, divide both terms by the smallest number of moles, 2.67. This gives 1 and 3. So the empirical formula is CH3 which has a molar mass of 15g/mol. Given the molar mass of the molecular formula as 30g/mole, we can calculate the factor by which to multiply the subscripts of CH3.

X = molar mass of molecular formula / molar mass of empirical formula = 30/15
X=2

So (CH3)2 is C2H6.
3 0
3 years ago
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