In the lab Karen reacts manganese metal with excess calcium carbonale according to the following reaction: 1 Mn + 2 Caco, 6:1 Mn(CO3)2 + 2 Ca
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15. What type of reaction dld Karen carry out?
a. Synthesis
b. Combustion
C. Single Replacement
16. How many moles of Ca will be produced if 1.23 moles of Caco, are used in the reaction?
a 0.62 mol Ca
b123 mol ca
c. 246 mol ca
17. How many grams of Mn(C0.), will be produced if 0.77 moles
of Caco, are used in the reaction?
a. 67.34 g Mo{C0.),
b. 134 67 g Mn(CO),
c. 189.78 g Mn(CO)

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;