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denpristay [2]
3 years ago
8

What is the scientists next step if he concludes that his hypothesis is false?

Chemistry
1 answer:
My name is Ann [436]3 years ago
4 0
Finish their experiment and conclusions, then remake their observations and reform a new hypothesis and procedure, and repeat until they are correct
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What happens when an electron moves from a higher energy level to a lower one
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When an electron moves from a higher to a lower energy level, energy is released (often as light).
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4 years ago
PLEASE HELP!!! ON A TIMER, WILL MARK BRAINLIEST
Nadusha1986 [10]

Answer:

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3 years ago
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How many liters of water vapor can be produced if 8.9 liters of methane gas (CH4) are combusted, if all measurements are taken a
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From the chemical equation given, one mole of CH4 yields two moles of water (H2O). If all the methane gas that is 8.9 L is combusted then the volume of water produced is the number of moles H2O times the volume of the methane gas used up, that is 8.9 L × 2 = 17.8 L of water produced. 


5 0
3 years ago
Morphine has the formula C17H19NO3. It is a base and accepts one proton per molecule. It is isolated from opium. A 0.682g sample
zloy xaker [14]

<u>Answer:</u> The mass of morphine is 0.059 grams

<u>Explanation:</u>

To calculate the number of moles for given molarity, we use the equation:

\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in mL)}}

Molarity of sulfuric acid solution = 0.0116 M

Volume of solution = 8.92 mL

Putting values in above equation, we get:

0.0166M=\frac{\text{Moles of sulfuric acid}\times 1000}{8.92}\\\\\text{Moles of sulfuric acid}=\frac{0.0116\times 8.92}{1000}=1.035\times 10^{-4}mol

The given chemical equation follows:

2C_{17}H_{19}NO_3+H_2SO_4\rightarrow \text{Product}

By Stoichiometry of the reaction:

1 moles of sulfuric acid reacts with 2 moles of morphine

So, 1.035\times 10^{-4}mol of sulfuric acid will react with = \frac{2}{1}\times 1.035\times 10^{-4}=2.07\times 10^{-4}mol

To calculate the mass of morphine for given number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Molar mass of morphine = 285.34 g/mol

Moles of morphine = 2.07\times 10^{-4}mol

Putting values in above equation, we get:

2.07\times 10^{-4}mol=\frac{\text{Mass of morphine}}{285.34}\\\\\text{Mass of morphine}=(2.07\times 10^{-4}mol\times 285.34g/mol)=0.059g

Hence, the mass of morphine is 0.059 grams

3 0
4 years ago
Select all that apply. Which of the following measurements have 1 significant figure?
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The Answer will be
A, B, and D

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