Answer:
There will be no candy left because Laurie will give each friend 10 pieces of candy each
O
A. A scientist should form a hypothesis, then conduct an experiment.
O
B. A scientist should draw conclusions, then form a hypothesis.
O
C. A scientist should conduct an experiment, then state the question.
D. A scientist should collect data, then state the question.
A scientist should form a hypothesis, then conduct an experiment describes the correct order for using the scientific method. Thus option A is correct.
Scientific method can be defined as to answer the question, a continuous experiment, investigation which are applied in a scientific method, includes measurable observation, develop experiment and improve a hypothesis and formulate phenomenon.
The different steps of Scientific method are involve in Making an Observation is involved the different steps like inspection, conducting the investigation by asking questions.
Asking Questions most important step and it is used to make sure that every details are known and the query can be solved quickly.
To construct the Hypothesis, it involves proper explanation of the query and it is most significant part of the scientific method.
For more details regarding scientific method, here
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Answer:
A
Explanation:
som temperature. More helium was added to the cylinder and the volume
as adjusted so that the gas pressure remained the same. How many
holes of helium were added to the cylinder if the volume was changed
rom 2.00 L to 2.70 L? (The temperature was held constant.) *
"our answer
!
This is a required question
B. How many grams of Helium would be added in question #2? *
Answer:
Final number of moles = 0.675 mol
Mass = 2.7 g
Explanation:
Given data:
Initial volume of gas = 2.00 L
Final volume of gas = 2.70 L
Initial number of moles = 0.500 mol
Final number of moles = ?
Solution:
Formula:
V₁/n₁ = V₂/n₂
V₁ = Initial volume
n₁ = Initial number of moles
V₂ = Final volume of gas
n₂ = Final number of moles
Now we will put the values in formula.
2.00 L /0.500 mol = 2.70 L / n₂
n₂ = 2.70 L× 0.500 mol /2.00 L
n₂ = 1.35 L.mol / 2.00 L
n₂ = 0.675 mol
B)
Grams of helium added = ?
Solution:
Mass = number of moles × molar mass
Mass = 0.675 mol× 4 g/mol
Mass = 2.7 g