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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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Calculate the mass of 6.9 moles of nitrous acid (HNO2). Explain the process or show your work by including all values used to de
AlexFokin [52]

Answer:- 324.3 grams.

Solution:-  We have been given with 6.0 moles of nitrous acid and asked to calculate it's grams. Moles to grams is a unit conversion and for doing this conversion we multiply the given moles by the molar mass of the compound.

Molar mass is the formula mass and to calculate this the atomic masses of each atom are multiplied by their respective subscripts that is the number of the atom in the compound .

For example, NO_2 has one nitrogen atom and one oxygen atom. So, the molar mass of this is = atomic mass of N + 2(atomic mass of O)

= 14 + 2(16)

= 14 + 32  

= 46 gram per mol

gram per mol is the unit of molar mass. So, the molar mass of NO_2 is 46 grams per mol.

Let's calculate the molar mass of nitrous acid using the same concept.

molar mass of [HNO_2 = 1 + 14 + 2(16)

= 1 + 14 + 32

= 47 grams per mol

Now, 6.9 moles of nitrous acid could easily be converted to grams as:

6.9molHNO_2(\frac{47g}{1mol})

= 324.3 g

Hence, the mass of 6.9 moles of nitrous acid is 324.3 grams.

6 0
3 years ago
Select all that apply. The rate law for the reaction 2NO(g) + CU(g) rightarrow 2NOCl(g) is given by R = k[NO][Cl2] If the follow
Daniel [21]

Answer:

a. 2nd order reaction.  

b. The first step is the slow step.  

Explanation:

r = k[NO][Cl₂]

a. The reaction is first-order in [NO] and first-order in [Cl₂], so it is second-order overall.

b. The first step is the slow step, because it predicts the correct rate law.

c. is wrong. Doubling [NO] would double the rate, because the reaction is first-order in [NO].

d. is wrong. Cutting [Cl₂] in half would halve the rate, because the reaction is first-order in [Cl₂].

e. is wrong. The molecularity is two, because two particles are colliding.

f. is wrong. Both steps are bimolecular.

4 0
4 years ago
Which one of the following solutions contains the greatest number of moles of chloride ions?
Ket [755]

Answer:

ok

Explanation:

6 0
3 years ago
3. When two forces act in the SAME direction on an object, the net force is found by
jekas [21]

Answer:

subtracting

Explanation:

subtracting

4 0
4 years ago
Need help asap!!!!<br> the last one is 3
zimovet [89]

Answer:

A

Explanation:

i think A is correct answer because

A has 8 Electrons& Protons

and it's electronic configuration ns² np⁶.

which allow it to gain 2 electrons to reach stability.

7 0
3 years ago
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