Assuming that seawater contains 15 ppt of gold, calculate the number of grams of gold contained in 1.0×103gal of seawater.
Assuming that seawater contains 15 ppt of gold, calculate the number of grams of gold contained...
Assuming that seawater contains 15 ppt of gold, calculate the number of grams of gold contained in 1.0×10^3gallons of seawater.
2) A gold necklace contains 0.54 mol of gold. What is its mass in grams? 3) A helium balloon contains 0.56g of He. How many moles of He does it contain? 4) How many Na atoms in 255 g of Na3PO4? 5) Calculate the mass in grams of 6.4 x 102 NO: molecules 6) Determine the number of atoms of O in 84.0 g of CsH1005
Question 1 It has been estimated that 1.0 g of seawater contains 4.0 pg of Au. The total mass of seawater in the oceans is 1.6x1012 Tg, If all of the gold in the oceans were extracted and spread evenly across the state of Georgia, which has a land area of 58,910 mile2, how tall, in feet, would the pile of Au be? Density of Au is 19.3 g/cm3. 1.0 Tg = 1012g.
I have an alloy which contains silver and gold . They alloy weights 34.5 grams and is 46.8% silver. What is the % of gold ? How many grams of gold are there in the alloy?
Enter your answer in the provided box. -10 A 1.2-mL volume of seawater contains about 4.0 x 10g of gold. The total volume of ocean water is about 1.5% 1021 L. Calculate the total worth of all the gold in the world's oceans if the price of gold is $20.57 per gram. × 10 dollars
Calculate the number of grams of carbon dioxide that are contained in a 7.89 L container at 75.6 °C and 2.16 atmospheres pressure. You do not need to enter a unit with your answer. Answer: A substance has a heat of vaporization of 17.4 kJ/mol. If it has a vapor pressure of 798 mmHg at 36°C, what will the vapor pressure be at 18°C? Round your answer to a whole number (no decimal places) and be sure to include your...
4. A one ounce bag of Hot Cheetos contains: 11 grams of fat, 15 grams of carbohydrate and 1 gram of protein. Calculate the total number of Calories in this bag of Cheetos? What percentage of the Calories come from fat? Cal.
A solution contains 2.8 mg of Cu2+ per 0.66 kg solution. Calculate the concentration in ppt. Enter your answer in the provided box
Seawater contains approximately 5 μg of Zn2+ per liter. Calculate what voltage must be put on a zinc anode, relative to seawater, to completely prevent zinc from dissolving in seawater. Express your answer to three significant figures and include the appropriate units.
Calculate the number of grams of 5.0 % (m/m) NaCl solution that contains 6.30 g of NaCl. Calculate the volume in milliliters of 45 % (m/v) NaF solution that contains 2.0 g of NaF. Calculate the volume in milliliters of 8.5 % (v/v) ethanol solution that contains 30.4 mL of ethanol.