Answer:it’s 4 (an increase in testosterone in males unsung anabolic steroids increases male features
Explanation:
The volume of the ethanol is 6.7 mL
<h3>What is the density of the ethanol?</h3>
We know that density is defined as the ratio of the mass to the volume of an object. We know that the density is said to be an intrinsic property and this means that we can use the density of the object to be able to obtain the kind of object that we are dealing with.
We have the information that the mass of the carbon dioxide that can be obtained from the reaction is about 10 g. We can now use this to obtain the number of moles by the use of the formula;
Number of moles = mass/ molar mass
= 10 g/44 g/mol
= 0.23 moles
From the reaction equation:
1 mole of ethanol produces 2 moles of carbon dioxide
x moles of ethanol produces 0.23 moles of carbon dioxide
x = 0.23 × 1 /2
= 0.115 moles
Mass of ethanol = 0.115 moles × 46 g/mol
= 5.29 g
Volume of the ethanol = mass/density
volume = 5.29 g/0.789 g/mL
= 6.7 mL
Learn more about ethanol;brainly.com/question/250024
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Answer:
B) Global climate changes
Explanation:
The greatest threat to the survival of large predator animals such as mountain lions and tigers is the change occurs in climate. Due to climate change, the temperature of the whole world increases. On mountains, the temperature is very low which is favorable for the growth of mountain lions and tiger. But increase occurs in the temperature of these mountain areas due to global warming, these animals die.
