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anyanavicka [17]
3 years ago
5

Which of the following best describes a scientific model? (3 points)

Chemistry
2 answers:
natali 33 [55]3 years ago
7 0

Answer:

A way to prove a theory is true

Explanation:

I hope this helps

OlgaM077 [116]3 years ago
3 0

Answer:

A way to prove a theory is true

-hope this the correct answer and if not i hope it at least helped but regardless have a good rest of your day :)

Explanation:

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Calculate the mass in grams of 0.800 mole of H2CO3. g
PilotLPTM [1.2K]
MH₂CO₃: (1g×2) + 12g + (16g×3) = 62 g/mol

1 mol --- 62g
0,8 mol -- X
X = 0,8×62
X = 49,6g
6 0
3 years ago
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Determine the equilibrium pH and speciation (concentration of each species) of the following two solutions. Neglect activity cor
irina [24]

Answer:

HCl solution - H30+ and Cl ions. pH 3

NaCl - Na+ and Cl-. pH 7

Explanation:

a) HCl solution - the hydrogen ion combines with water molecule to form the hydronium molecule which is responsible for acidity. The chloride ion is also found in solution.

pH = -log [H+] = -log(10^-3) = 3

b) NaCl 10-3 g. The solid dissocates in water forming the Na+ and Cl- ions. None of these ions affect pH

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4 years ago
Is the hydrogen ion concentration of a pH 3.8 solution higher or lower than that of a solution with a pH of 6.2?
vesna_86 [32]
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4 years ago
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What is the MSDS? Why is it important? *
Pavlova-9 [17]

Answer:

Hey there!

A MSDS is a Material Safety Data Sheet, and can be used to provide detailed and comprehensive information about the hazards of a certain product, such as medicine or chemicals.

Let me know if this helps :)

6 0
4 years ago
How many molecules of O2 are there in 2.0 moles of oxygen?
nignag [31]
28 molecul are in mol of ox
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