The difference between the initial mass (1.04 g) and the final mass (0.61g) is the mass of water present in the sample:
1.04 g - 0.61 g = 0.43 g
Divide by the molar mass of water: 18.01 g / mol to obtain the number of moles of water:
0.43 g / 18.01 g / mol = 0.0239 moles
Calculate the number of moles of dehydrated NiSO4
Number of moles = mass in grams / molar mass
molar mass of NiSO4 = 154.75 g/mol
number of moles NiSO4 = 0.61 g / 154.75 g/mol = 0.00394 moles
Now determine the molar ratio water to NiSO4: 0.0239 / 0.00394 = 6.07 ≈ 6
Then, the formula of the hydrate product is NiSO4 · 6 H2O.
Use the prefix hexa (6) to name the compound: Nickel(II) sulfate hexadydrate
15 because atomic no. is the number of protons
Answer:
The correct answer is "Short acting".
Explanation:
The client gets a blood glucose reading of 218 mg/dL (12.1 mmol/L), and immediately supplies a dose of short-acting insulin. Normal blood glucose levels are between 70 and 100 mg/dl fasting and less than 140 mg/dl two hours after each meal. In this way, the type of insulin that should be injected is short-acting, since your blood glucose level is much higher than the limit set for before eating.
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Your question is inappropriate and unclear to read it. It doesn't make any sense.