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timama [110]
2 years ago
13

1. What is the scientific methed?

Chemistry
1 answer:
Marrrta [24]2 years ago
5 0

Answer:

The basic steps of the scientific method are:

1) make an observation that describes a problem,

2) create a hypothesis,

3) test the hypothesis, and

4) draw conclusions and refine the hypothesis. ... Critical thinking is a key component of the scientific method. Without it, you cannot use logic to come to conclusions.

You might be interested in
15 grams of sodium reacts with a certain amount of chlorine to yield 37 grams of sodium chloride, as shown below.
ale4655 [162]

Answer: 22g of chlorine would be needed to carry out this synthesis reaction

Explanation:

A synthesis reaction is one in which two or more than two elements combine together to forma single product.

Na+Cl\rightarrow NaCl

The atoms present in the reactants are found on the product side. According to the law of conservation of mass, the number of atoms on both sides of the arrow must be same as the total mass must be conserved.

15 grams of sodium reacts with 22 grams of chlorine to yield 37 grams of sodium chloride. Thus 22g of chlorine would be needed to carry out this synthesis reaction.

4 0
3 years ago
Which of the following is NOT something that electromagnetic waves and mechanical waves have in common?
Svetlanka [38]

Answer:

D. In both, vibrations occur in a parallel direction to the direction of the wave.

Explanation:

It is not true that in both mechanical and electromagnetic waves, vibrations occur in  parallel direction to the direction of the wave.

As with all waves, they are disturbances that transfers energy without moving the materials of the medium.

  • Electromagnetic waves have only one way of propagation which is a vibration in both parallel and longitudinal direction.
  • Mechanical waves can be propagated either in a parallel direction or longitudinal direction and not both.
6 0
2 years ago
The wind causes this wind turbine to spin, creating electricity. The moving blades are evidence of A) solar power. B) work being
timama [110]
They answer is (C) Potential Energy
5 0
2 years ago
1. A gas expands and does p-v work on the surroundings equal to
azamat

The change in energy of the system : -63 J

<h3>Further explanation</h3>

Given

279 J work

216 J heat

Required

The change in energy

Solution

Laws of thermodynamics 1

ΔU=Q+W

Rules :

  • receives heat, Q +  
  • releases heat, Q -  
  • work is done by a system, W -  
  • work is done on a system, W +  

a gas work on the surrounding : W =-279 J

a gas absorb heat from surrounding : Q = +216 J

Internal energy :

= -279+216

= -63 J

3 0
2 years ago
Plants uses radiant energy from the sun to turn ___ and ___
siniylev [52]

Answer:

chemical energy in the form of glucose/sugar

Explanation:

6 0
3 years ago
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