Answer:
True
Explanation:
If you look at a map they look like they connect and the have similarities like mountains
Answer:
95.54mL
Explanation:
To calculate the volume that would have that mass, what is needed to be done is to use the formula that relates mass, density and volume.
Mathematically,
mass = density * Volume
But in this particular question we are to calculate the volume, we already have the mass and the density.
Rearranging the equation gives the following:
volume = mass/density
Our mass here is 75.0g while our density is 0.785g/mL
Hence, volume = 75/0.785 = 95.54mL
Answer:
MedlinePlus Drugs Information
Explanation:
Promethazine is in a class of medication called phenothiazines
Answer:
98.8g (3 s.f.)
Explanation:
Use the mole = mass/mr equation to find the moles of CaO, then use the molar ratio to find the moles of Fe2O3, which is the same as CaO, (assuming the ratio is 1:1, as you haven't stated it clearly in the question). Then use the equation and input to find Mass, which is 98.8g to 3 s.f.
Answer:
The blood will contain 750 grams of O2
Explanation:
Volume of blood in the human body = 15 deciliters
Mass of hemoglobin per deciliter of blood = 15 grams
Mass of hemoglobin in 50 deciliters of blood = 50×15 = 750 grams
Since all the hemoglobin molecules are saturated with O2, mass of O2 in the blood will be the same as mass of hemoglobin molecules in the blood.
Therefore, mass of O2 in the blood is 750 grams
