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bazaltina [42]
3 years ago
13

An object exerts force of 500 n and sits on an area of 4.5m X 1.5m. Calculate the amount of pressure exerted by the object in to

rr.
Chemistry
1 answer:
vlabodo [156]3 years ago
5 0

4.5 times 1.5

divide by 500n

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A sample of calcium oxide has mass of 2.80 g. The molar mass of CaO is 58.08 g/mold how many moles of CaO does this sample conta
finlep [7]
Hi!

To convert grams to moles, you need to divide the amount (grams) of your substance by its molar mass, both of which are given to you.

28 g CaO / 58.08 g/mol CaO = 0.4820936639 moles of CaO
(And 28 contains two significant digits, so you will round this to 0.48 moles.)

Good luck!
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3 years ago
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compared to a solution with a pH of 6, the hydronium ion concentration of a solution with a pH of 4 has how many more Times the
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A glass of room temperature water is placed into the refrigerator.Which of the following statements are true?
Liono4ka [1.6K]
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8 0
4 years ago
Using the graphic provided,idenify the reactants of photosynthesis?
Y_Kistochka [10]

Answer:

water, carbon dioxide reacted in the presence of sun light and chlorophyll and form glucose and oxygen.

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water is supplied through the roots, carbon dioxide collected through stomata and sun light is capture  by chloroplast.

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