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3 years ago

15

Scientific knowledge

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.

You might be interested in

What is the formula for tricarbon heptafluoride?<br> C2F3<br> CF7<br> C3F7<br> C773

bagirrra123 [75]

Answer:

C3F7

'Tri' means 3

Tricarbon means 3 carbon

"Hepta" means 7

Fluoridez molecular formula is "F"

hence F7

3 0

2 years ago

A barium hydroxide solution is prepared by dissolving 2.06 g of Ba(OH)2 in water to make 32.9 mL of solution. What is the concen

navik [9.2K]

Answer: 1.36 M

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

$Molarity=\frac{n\times 1000}{V_s}$

where,

n = moles of solute

To calculate the moles, we use the equation:

moles of solute= $\frac{\text {given mass}}{\text {molar mass}}=\frac{2.06g}{171g/mol}=0.0120moles$

$Molarity=\frac{0.0120\times 1000}{32.9}=0.364M$

The balanced reaction between barium hydroxide and perchloric acid:

$2HCIO_4+Ba(OH_)2\rightarrow BaCIO_4+2H_2O$

To calculate the concentration of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is $HClO_4$

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is $Ba(OH)_2$

We are given:

$n_1=1\\M_1=?\\V_1=8.50mL\\n_2=2\\M_2=0.364M\\V_2=15.9mL$

Putting values in above equation, we get:

$1\times M_1\times 8.50=2\times 0.364\times 15.9\\\\M_1=1.36M$

Thus the concentration of the acid is 1.36 M

4 0

3 years ago

Question 3(Multiple Choice Worth 1 points)

MatroZZZ [7]

Answer:

Do research on a Particular topic

8 0

3 years ago

Sally has constructed a concentration cell to measure Ksp for MCln. She constructs the cell by adding 2 mL of 0.05 M M(NO3)n to

hram777 [196]

Answer:

0.1056 mole

Explanation:

As Sally knows that the charge on the metal ion is n = +2

$MCl_n=MCl_2$

In that compartment $[M^{n+}]=[m^{2+}]=8.279 \ M$

The volume of the $MCl_n$ taken in that compartment = 6.380 mL

So, the number of moles of $M^{2+} = 8.279 \times 6.380$

= 52.82 m mol

= 0.05280 mol

$MCl_n \rightarrow M^{n+}+nCl^-$

But n = 2

Therefore, moles of $Cl^-$ = 2 x moles of $M^{n+}$

= 2 x 0.05282

= 0.1056 mole

3 0

3 years ago

13. What physical property is characteristic of all of the elements in the group located in the

zimovet [89]

Answer:

B. gas state at room temperature

Explanation:

6 0

3 years ago