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Determine the percent sulfur by mass in so3?
To determine the percent sulfur by mass in SO3, you need to consider the molar mass of each element. In SO3, there is one sulfur atom with a molar mass of 32.06 g/mol and three oxygen atoms with a molar mass of 16.00 g/mol each. Calculate the total molar mass of SO3, then determine the mass contributed by sulfur in that total mass to find the percent sulfur by mass.
If an Isotope has a 75 year half life how long until the parent isotope has decayed to 1 percent of the initial number?
It would take approximately 525 years for the parent isotope to decay to 1 percent of the initial number. This is calculated by multiplying the half-life of the isotope by the natural logarithm of 100 (which is -4.605), as it represents the fraction remaining after one half-life.
What is the mass percent of hydrogen in ammonium phosphate NH4 3PO4?
To find the mass percent of hydrogen in ammonium phosphate NH4 3PO4, first calculate the total molar mass of the compound. Then, determine the molar mass contributed by hydrogen. Finally, divide the molar mass of hydrogen by the total molar mass of the compound and multiply by 100 to get the mass percent.
What percent is left of our rainforest?
Approximately 80% of the Earth's rainforests have already been destroyed due to deforestation and other human activities. The remaining 20% is at risk and various conservation efforts are ongoing to protect these valuable ecosystems.
Calculate the percent yield of chlorine gas in the decomposition of hydrochloric acid if 25.8 grams of hydrochloric acid produces 13.6 grams of chlorine gas?
Percent yield can be calculated using the formula: (actual yield / theoretical yield) x 100. First, determine the theoretical yield of chlorine gas by finding the molar ratio between hydrochloric acid and chlorine gas. Once you have calculated the theoretical yield, plug the values into the formula to find the percent yield.
How do you determine the percent change?
You have an original value and a new value. Take the new value and subtract the original value. Then divide that number by the original value.
What percent of a sample of As-81 remains un-decayed after 43.3 seconds?
To determine the percent of As-81 that remains un-decayed after 43.3 seconds, you would need to know its half-life. The half-life of As-81 is approximately 46.2 seconds. Given that 43.3 seconds is slightly less than one half-life, you can use the formula for exponential decay: [ N(t) = N_0 \left( \frac{1}{2} \right)^{t/T_{1/2}} ] where ( N_0 ) is the initial quantity, ( t ) is the elapsed time, and ( T_{1/2} ) is the half-life. After 43.3 seconds, about 80% of the original sample of As-81 would remain un-decayed.
If 100 us pennies equals 1 us dollar determine the value of one thousand percent of ten thousand percent of 5 pennies.?
1,000 percent = 10 times the original value.10,000 percent = 100 times the original valueso 10 * 100 * 0.05 = $10.00
How do you determine the original number from a total that has 20 percent added to it?
Divide the total by 1.2 Example: If the inflated total is $273, the original price was 273/1.2 = $227.50 .
How do you calculate 15 percent decrease?
To calculate a 15 percent decrease, first determine the original amount. Then, multiply that amount by 0.15 to find the decrease in value. Subtract this decrease from the original amount to get the final value. For example, if the original amount is $100, the decrease would be $15, resulting in a final value of $85.
How many Percent does the original remains of the Philippine Forest have?
20 percent of the original remains of the Philippine forest
Jaime purchased a used car on sale for 3450. The original price of the used car was 4100. Write a expression that can be used to determine the percent of the original price that she saved on purchase?
((4100 -3450)/4100) x 100
What percent expresses a 5 percent decrease in the original whole?
95% You simply subtract the decrease from the original 100%.
How do you do Percent of change?
percent of increase-new-original over originalthen make the decimal a percent of increasepercent of decrease-original-new over originalthen make the decimal a percent of decrease
How do you do percent change?
percent of increase-new-original over originalthen make the decimal a percent of increasepercent of decrease-original-new over originalthen make the decimal a percent of decrease
What is the percent decrease from 220 to 33?
Percent Decrease = (Original Amount - New Amount)/(Original Amount) * 100% The percent decrease from 220 to 33 is 85%
The percent of change found when the original amount decreases is called the percent of?
percent of decrease
