Consider the situation. Scientists have developed an explanation of a phenomenon from several verified hypotheses. The explanation has been confirmed through numerous experimental tests.Which option best describes this explanation?
A. research question
B. scientific theory
C. scientific law
D.hypothesis
I think its B or D.
Answers
Answer:
B. scientific theory
Explanation:
The scientific theory explains the phenomenon observed in the natural world. It is based upon the scientific method. To arrive at the scientific theory a hypothesis is formed, experiments are designed and conducted, resulted evaluated, analyzed and conclusions are reached. scientific theory are based upon experiments that are tested under controlled conditions.
scientific theory
hope this helps :)
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How many electrons does N 3-have?
Please tell if this right!if not please answer with correct answers
What is the Method for distillation?
Answers
Answers
Answer: 14.7 L of oxygen gas at 25 degrees celsius and 1.04 atm is needed for the complete combustion of 5.53g of propane
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at NTP, weighs equal to the molecular mass and contains avogadro's number of particles.
According to stoichiometry :
1 mole of propane requires 5 moles of oxygen
Thus 0.125 moles of propane require= moles of oxygen
According to the ideal gas equation:'
P = Pressure of the gas = 1.04 atm
V= Volume of the gas = ?
T= Temperature of the gas = 25°C = 298 K
R= Gas constant = 0.0821 atmL/K mol
n= moles of gas= 0.625
Final answer:
To find the volume of oxygen gas needed for the complete combustion of propane at given conditions, use stoichiometric calculations based on the balanced chemical equation and apply the ideal gas law.
Explanation:
The question is asking for the volume of oxygen gas required for the complete combustion of a given amount of propane at a specified temperature and pressure. To solve this, stoichiometry must be used along with the ideal gas law. The balanced chemical equation for the combustion of propane (C3H8) is:
C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l)
This equation indicates that one mole of propane reacts with five moles of oxygen. First, calculate the moles of propane by dividing the given mass of propane by its molar mass. Then, use the stoichiometric relationship from the balanced equation to find the moles of oxygen needed. Finally, apply the ideal gas law (PV=nRT) to calculate the required volume of oxygen at the given conditions (remembering to convert temperature to Kelvin and pressure to atm if necessary).
Learn more about Stoichiometry here:
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Check all actions you would take.
Throw the broken pieces away.
Use the punctured cup as the outside cup,
not the inside cup.
0 Replace the cup
O Clean the area
| Mention the spill to the teacher.
O Call 9-1-1
Answers
Answer:Throw the broken pieces away, Replace the cup, Clean the area, Mention the spill to the teacher.
Explanation:
Answer:
1,3,4,5
Explanation:
PLEASE SOMEBODY ANSWER THX!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Oh come on now, give me a break ! Have you thought about it yet ?
Do you know how many states there are all together in the USA ?
At the present time, there are 50 states all together.
If 24 of them are on one side, then how many are on the other side ?
Isn't it (50 - 24) ? Can you do the subtraction ?
Answers
The answer is 4.8 x 10^5 in scientific notation and 480,000 in standard form.
To multiplying numbers in scientific notation, you need to multiply the coefficients and add the exponents.
Using the given numbers, (1.2 x 107) and (4 x 10-2), we multiply the coefficients 1.2 and 4 to get 4.8.
Then, we add the exponents 7 and -2 to get 5.
Writing the result in scientific notation, we have 4.8 x 105.
In standard form, this is expressed as 480,000.
Therefore, the answer in scientific notation is 4.8 x 105 and in standard form is 480,000.
Learn more about multiplying numbers in scientific notation here:
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4 x .10 = .4
12000000 x .4 = 4,800,000
= 4.8 x 10^6
The little numbers after the 10 tells you how many times you move the numbers decimal. We do this so we can simplify bigger numbers.
water
B.
rubber
C.
glass
D.
wool fabric