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tatyana61 [14]
3 years ago
6

if you measure the mass of a model car to be 230 grams. the actual mass is 218 grams. what is your percent error.

Chemistry
1 answer:
Roman55 [17]3 years ago
6 0
27.6% is the correct answer 
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134 grams of nitric acid is added to 512 grams of water. Calculate the molality of nitric acid.
Nana76 [90]

Answer:   4.15234 m

512 g H2O * \frac{1 kg}{1000 g} = 0.512 kg H2O

Nitric Acid:  HNO3 = 1.008 + 14.007 + 3(15.999) = 63.012 g/mol

H = 1.008 g/mol

N = 14.007 g/mol

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134 g HNO₃ * \frac{mol}{63.012 g} = 2.126 mol

m = \frac{2.126  mol}{0.512  kg} = 4.15234 m

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3 years ago
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dolphi86 [110]

Answer:

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Explanation:

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3 years ago
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What is the volume of 0.23kg of pure water
vichka [17]
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What does the following energy diagram represent?A. Activation energyB. Exothermic reactionC. Specific heat capacityD. Endotherm
inn [45]

Explanation:

We are given the following diagram.

In this diagram we can see how the energy in the reaction changes over time. The energy of the products is greater than the energy of the reactants. That means that the products have won some energy. That represents an endothermic reaction where the reactants absorb energy from the surrounding to form the products.

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8 0
1 year ago
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