Answer:
317.6 mL
Explanation:
Step 1: Write the balanced neutralization equation
MgO + 2 HCl ⇒ MgCl₂ + H₂O
Step 2: Calculate the mass corresponding to 640.0 mg of MgO
The molar mass of MgO is 40.30 g/mol. The moles corresponding to 640.0 mg (0.6400 g) of MgO are:
0.6400 g × (1 mol/40.30 g) = 0.01588 mol
Step 3: Calculate the moles of HCl that react with 0.01588 moles of MgO
The molar ratio of MgO to HCl is 1:2. The moles of HCl are 2/1 × 0.01588 mol = 0.03176 mol
Step 4: Calculate the volume of 0.1000 M HCl that contains 0.03176 moles
0.03176 mol × (1 L/0.1000 mol) = 0.3176 L = 317.6 mL
<span>The answer to this would be radioactive decay. This is also known as "nuclear decay" or "radioactivity".</span>
First determine the molality of the solution. m = (w solute)/[(mm solute)(kg solvent)] -- mm means molar mass. So,
m = (14.7 g)/[(180 g/mol)(0.150 kg) =0.544 mol/kg = 0.544 m
Change in boiling point (∆t) = m x Kbp = (0.544 m)(0.512 °C/m) = 0.28°C
The solution will boil at 100.28°C at 1 atm.
the density if water is 1.00 g/ml and Kb= 0.512 C/m
The waste from the human body is removed in the form of urea and nitrogenous wastes. The urine comprises 95 % water and 5% waste ions formed via glomerular filtration, reabsorption, and secretion.
<h3>How does the urinary system work?</h3>
Waste of the human body can be described as excreted from the human body, especially in the form of urine. Our kidneys play important in the process of excretion. Components of normal human urine include 95 % water and 5 percent solid wastes.
Urine is formed in the nephron, which is the structural and functional unit of the kidney. Urine formation is carried out in three phases Glomerular filtration, Reabsorption, and Secretion.
Glomerular filtration takes place in the glomerulus where blood is filtered. Around 99 percent of the filtrate is reabsorbed by the renal tubules known as reabsorption. The secreted ions are combined with the filtrate and form urine.
Learn more about urinary system, here:
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