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Knemaunee Wheeler
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Why must you balance an equation to describe correctly what happens in a chemical reaction?
The Law of Conservation of Mass applies. For any reaction A + B = C + D The total mass of 'A' & 'B' must equal the total mass of 'C' & 'D'. Numerically, 20g(A) + 25g(B) = 45 g So the total of 'C; & 'D; must equal 45g. However, individually 'C' may be 30 g & 'D' 15g = So 30g + 15 g = 45 g as before. Now going into a reaction equation. H2SO4 + 2NaOH = NaSO4 + H2O This equation in incorrect , because you have lost mass on the right hand side These is 1 x sodium (Na) and 1 x water (H2O) missing, So mass is NOT conserved. The BALANCED equation is H2SO4 + 2NaOH = Na2SO4 + 2H2O The numbers of each type of atom are the samer on both sides of the equation ,so since atoms have mass, the balanced equation conserves mass. Hope that helps!!!!
A sample of 1 mL of water has a mass of about?
The mass of 1 mL of water is 1 g.
What is a positive particle with a mass of 1 Dalton?
A proton has a mass of 1 Dalton
The molar mass of a mole of lead?
molar mass =207.2 g / mol no. moles = mass/ molar mass moles = 1 1(207.2) = mass mass of 1 mole lead is 207.2g molar mass =207.2 g / mol no. moles = mass/ molar mass moles = 1 1(207.2) = mass mass of 1 mole lead is 207.2g
Why must all chemical reactions be balanced?
All chemical reactions must be balanced, because matter is neither created nor destroyed in these reactions. Even if the arrangement of the individual atoms is different, the number of atoms of each element remains constant. Note that chemical reactions differ from nuclear reactions.
What is more denser 30ml solution with mass of 45g or 40 ml solution with mass of 50g?
A 30ml solution with a mass of 45g has a density of 45/30 or 1.5 g/ml, while a 40ml solution with a mass of 50g has a density of 50/40, or 1.25 g/ml. The 30ml solution with a mass of 45g has a higher density.
What is the density of a perfect rectangle that has a mass of 45g 1cm 3cm 5cm?
15X3cmX1cmX3cmX5cm=61
What is 45g in kg?
45g = 0.045kg
What is the density of and object with a volume of 238cm3 and a mass of 45g?
The object's density is about 0.19 g/cm3
What is the mass percent of calcium chloride if 45g of cacl2 is dissolved in 320 g of water?
swagag
What is the mass of a 50 ml graduated cylinder?
i think its about 43.45
If you have a rock with a volume of 15cm3 and a mass of 45g What is its density?
The rock's density is 3 g/cm3
How many cups of parmesan in 45g?
45 grams of water is equal to approximately 0.19 cups. This is because 1 cup of water has a mass of approximately 236.6 grams, or 0.2366 kilograms.
How many ml in 45g face cream?
We need to know the density of the lotion to calculate the volume. V=M/d
How many carbs is in 1 cup of Jasmine rice?
There are 45g of carbohydrates in 1 cup of Jasmine (or white) rice.
A sample of fluid has volume of 15 ml and a mass of 45 g. What is the density of the fluid?
Density = Mass/Volume D = M/V D = 45g/15ml D = 3g/ml
How many 45g of flour in a cup?
1 cup is 250 gm. So 45 gm is about 1/5 of a cup
