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disa [49]
3 years ago
9

When a scientist conducts an investigation, which of the following is the first thing he or she should do?

Chemistry
2 answers:
Vinvika [58]3 years ago
6 0

The correct answer is C

Lelu [443]3 years ago
5 0
The correct answer is "B. Make a Hypothesis".
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Fish that feed on sediment will most likely be found in rivers
Wittaler [7]
They would be found in shallow rivers because it would be easiest for them to find there food in a shallow river. and i go fishing so i know
5 0
3 years ago
Which correctly lists three characteristics that are used to describe alr?
Art [367]

Answer:

pressure altitude and radiation

Explanation:

beacuse in atmosphere there is aire pressure atmospheric pressure and ofcourse radiation is there as well as altitude at heights

4 0
3 years ago
An object with a pre-weighed mass of exactly (and correctly) 0.54 g is given to 2 students. One student obtains a weight of 0.59
Alina [70]

Answer:

Both student have same percent error.

Explanation:

Given data:

Actual mass of object = 0.54 g

Measured value by one student = 0.59 g

Measured value by second student = 0.49 g

Percent error = ?

Solution:

Formula

Percent error = (measured value - actual value / actual value) × 100

Percent error of first student:

percent error = (0.59 g - 0.54 / 0.54 ) ×100

percent error =  9.3 %

Percent error of second student:

Percent error = (0.49 g - 0.54 / 0.54 ) ×100

Percent error = - 9.3 %

Both student have same percent error. The only difference is that first student measure the greater value then actual value and second student measure the less value then actual, however difference was same and gives same percent error.

3 0
3 years ago
Hydrogen and oxygen react to form water. Which statement best describes the reactants and product at equilibrium? A. The reactio
san4es73 [151]
The answer I got was C.
3 0
3 years ago
Select the correct answer.
jeyben [28]

Answer:

A. Second

Explanation:

The S.I unit of time is in Seconds.

The S. I unit is known as the metric system is the most commonly used system of reporting scientific measurements in the world today. Other units are the imperial units.

It is the international system of unit used in almost all countries. The seven basic SI units are:

        Quantities                                    Units

  • Length                                         meters(m)    
  • Time                                            seconds(s)
  • Amount of substance                 moles(mol)
  • Mass                                            kilograms(kg)
  • Luminous intensity                     candela(cd)
  • Temperature                               kelvin(K)
  • Electric current                            ampere(A)

The SI unit of time which measures the duration of an activity or event is therefore given as seconds(s)

3 0
4 years ago
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