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slava [35]
4 years ago
14

What is a scientific method? A. A method of testing an idea B. The steps required to form a hypothesis C. A way of analyzing dat

a D. The process of proving a theory
Chemistry
1 answer:
Anika [276]4 years ago
4 0

Answer:

a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.

Explanation:

hope this helps you :)

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What are the man-made, or synthesized, metals called?<br><br> You don't need to explain
lubasha [3.4K]

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Explanation:

3 0
4 years ago
If the temperature of the earth's layers increases by about 90 degrees fahrenheit for every 1 mile from the surface and you are
bogdanovich [222]
The rate of change of the temperature of the Earth's surface is given to,
                                       90°F/mile
To determine the temperature x miles away from the surface, we multiply the depth by the given rate. This will give us the answer of,
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4 0
3 years ago
Read 2 more answers
Ex1. how many moles correspond to 250 g of each of the following compounds?
Ivahew [28]

Answer:

Ex1 = 4.3 moles

Explanation:

for Ex 1

 ** Number of mole = Mass (g) / Molecular weight ' Mw'  (g/mole)

for a = NaCl , first you must be calculate Mw = look to periodic table

Atomic weight for Na is 22.9 = 23 g and for Cl is 35.45 = 35 g

so Mw for NaCl = 23+35 = 58 g/mole

so Number of Moles for NaCl 250 g is

Number of Moles = 250 / 58 = 4.3 moles

do same for others ...

good luck ..

3 0
4 years ago
Read 2 more answers
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