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drek231 [11]
3 years ago
10

Why do scientists make hypothesis

Chemistry
2 answers:
Sergeeva-Olga [200]3 years ago
8 0
Scientists make hypothesis in order to make an educated guess on the outcome of the experiment.
galben [10]3 years ago
7 0
Scientists make hypothesis so they can have something test more for an educated guess.
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Gnoma [55]

Answer:

Neutrons released during a fission reaction cause other nuclei to split

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2 years ago
What is the maximum number of moles of NaCl that can be produced from the reaction of 5.6 mol Na and 4.7 mol CI2?
RideAnS [48]

Answer:

Explanation:

Na + Cl2 —> NaCl

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2 years ago
Which of these facts best illustrates why regulation of alcohol consumption is necessary
exis [7]

So that people don’t break laws or drive under the influence.

4 0
3 years ago
What is the molarity of a solution that contains 15.0g of naoh per 500.0 ml of solution ​
VARVARA [1.3K]

Answer:

0.4 M

Explanation:

Molarity is defined as moles of solute, which in your case is sodium hydroxide,  

NaOH

, divided by liters of solution.

molarity

=

moles of solute

liters of solution

Notice that the problem provides you with the volume of the solution, but that the volume is expressed in milliliters,  

mL

.

Moreover, you don't have the number of moles of sodium hydroxide, you just have the mass in grams. So, your strategy here will be to

determine how many moles of sodium hydroxide you have in that many grams

convert the volume of the solution from milliliters to liters

So, to get the number of moles of solute, use sodium hydroxide's molar mass, which tells you what the mass of one mole of sodium hydroxide is.

7

g

⋅

1 mole NaOH

40.0

g

=

0.175 moles NaOH

The volume of the solution in liters will be

500

mL

⋅

1 L

1000

mL

=

0.5 L

Therefore, the molarity of the solution will be

c

=

n

V

c

=

0.175 moles

0.5 L

=

0.35 M

Rounded to one sig fig, the answer will be

c

=

0.4 M

8 0
2 years ago
An infrared wave has a wavelength of 0.00005 m. What is this wavelength in
Serjik [45]

Answer:

B. 5 \times  {10}^{ - 5}\: m

Explanation:

0.00005  \: m= 5 \times  {10}^{ - 5} \: m  \\

5 0
3 years ago
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