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ehidna [41]
4 years ago
15

Identify the type of scientific knowledge represented by each statement. law theory hypothesis If a certain piece of metal is co

oled, it will conduct electricity better. arrowRight The amount of electric current that passes through a conductor is directly proportional to the voltage and is described by the formula V = IR. arrowRight Electricity is the flow of electric charge in the form of electrons moving through a circuit. arrowRight
Chemistry
2 answers:
Anton [14]4 years ago
8 0
“If a certain metal is cooked, it will conduct electricity better”

- this is a hypothesis, since the statement is kind of vague...”certain metal”...and is written in an “if-then” format.

The amount of electric current that passes through a conductor is directly proportional to the voltage and is described as V = IR

- laws are usually scientific understanding that we’ve tested so much that we’ve come to a conclusion that can often be written out as a mathematical relationship. Hence, the “V = IR”

Electricity is the flow of electric charge in the form of electrons moving through a circuit

- this is a theory. I would give an explanation but I’m out of time.

Hope this helps
Contact [7]4 years ago
7 0

If a certain piece of metal is cooled,  

it will conduct electricity better. its a Hypothesis

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Sav [38]

Answer:Heavy rainfall causes a landslide on the side of a mountain

Explanation: The hydrosphere is the water in the world. The geosphere is rocks and earth.

3 0
3 years ago
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Choose the statement below that is TRUE. Question 7 options: The term "strong electrolyte" means that the substance is extremely
Setler [38]

Answer: A weak acid solution consists of mostly nonionized acid molecules.

Explanation:

Strong electrolytes are those solutions which undergo complete dissociation when dissolved in water. The dissociation of strong electrolytes is given by a right arrow.

Weak electrolytes are those solutions which do not undergo complete dissociation when dissolved in water. The dissociation of weak electrolytes is given by a rightleft arrow.

Weak acids are those substances which dissociate partially to give H^+ ions when dissolved in water. Thus most of molecules remain unionized in solutions.

CH_3COOH\rightleftharpoons CH_3COO^-+H^+

Strong acids are those substances which dissociate completely to give H^+ ions when dissolved in water.

HNO_3(aq.)\rightarrow H^+(aq.)+NO_3^-(aq.)

3 0
3 years ago
If excess sodium is added to 0.10 L of 1.00 M hydrochloric acid solution, how many moles of NaCl is formed?
Ksenya-84 [330]

Answer:

=> 0.10 moles

Explanation:

The question is asking us to find the moles of NaCl cid formed.

We have been provided with;

0.10 L of 1.0 M NaOH.

We know that mole ratio of the reaction is 1:1 and also the molarity of a solution is contained in 1 L or 1000 mL or 1000 cm³.

This means that;

1.0 M is contained in 1.0 L.

X mol is contained in 0.10 L

x \: mol \:  =  \frac{0.1 \times 1.0}{1.0}  \\  = 0.10 \: mol

= 0.10 moles of NaCl formed

8 0
2 years ago
draw the lewis structure for pcl6, then answer the following questions: 1. how many valence electrons does this compound have? 2
DedPeter [7]

The Pcl6 has 48 bonded electrons and 18 lone pairs.

The Lewis structure of Pcl6 is as follows: -

Phosphorous is bonded with 6 chlorine atoms with 18 lone pairs.

Lewis structures, also known as Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDS), are diagrams that show the bonding between atoms of a molecule, as well as the lone pairs of electrons that may exist in the molecule. [1][2][3] A Lewis structure can be drawn for any covalently bonded molecule, as well as coordination compounds.

    In Lewis structure, atoms are bonded with single bonds. If total number of electrons are 't' and number of bonds are 'n', then t-2n number of electrons are to be placed. Once the central atom is placed, they need to complete the octet rule.

Learn more about Lewis-dot structure from,

brainly.com/question/18083461

#SPJ4

5 0
1 year ago
An experiment is carried out to observe the melting ice. Heat energy is supplied at a constant rate. The temperature of the ice
zhenek [66]

Answer:

If the ambient temperature around a piece of ice increases, the temperature of the ice will increase as well. However, this steady increase in temperature stops as soon as the ice reaches its melting point. At this point, the ice undergoes a change of state and turns into liquid water, and its temperature won't change until all of it has melted. You can test this with a simple experiment. Leave a cup of ice cubes in a hot car and monitor the temperature with a thermometer. You'll find that the icy water remains at a frosty 32 degrees Fahrenheit (0 degrees Celsius) until all of it has melted. When that happens, you'll notice a quick temperature rise as the water continues to absorb heat from the inside of the car.

7 0
3 years ago
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