09/30/20

4Al + 3O2 → 2Al2O3 how many moles of Al2O3 can be made by reacting 49.2 moles of O2
Looking for steps/explanation how to solve this
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09/30/20

How many moles are in 1.06 x1020 atoms of iron? Express your answer to three significant figures and in correct scientific notation.
If someone can show me the steps so I can solve on my own. I've been struggling with online classes just want to make sure my equations are right. I solved like this but I'm unsure if it is right.... more
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09/30/20

what is the density?
You measure the block of metal and find it to be .006002 dm (decameter) by 54.1945 mm by .000657 hm.You measure its mass to find a value of 213.706 g.What is the denisty?
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09/30/20

The difference of two numbers is 18. Three times the smaller minus the larger is -12. Find the numbers.
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09/30/20

Need help doing this problem please!
Trey will rent a car for the weekend. He can choose one of two plans. The first plan has an initial fee of $55 and cost an additional $0.08 per mile driven. The second plan has an initial fee of... more
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09/30/20

Please help with this

Topic-Determining the formula of a hydratePurpose·   To determine the percentage composition of water in a hydrate of Copper (II) Sulfate·   To determine the chemical formula of CuSO4∙xH2OEquipment... more
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09/30/20

9. Write a chemical formula for iron(III) sulfide.

9. Write a chemical formula for iron(III) sulfide.
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09/30/20

8. Name the following compound: Sr3P2

8. Name the following compound: Sr3P2 
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09/30/20

Calculate the largest amount of H2O that could be produced.
Hydrogen (H2) gas and oxygen (O2) gas react to form water H2O vapor. Suppose you have 1.0 mol of H2 and 5.0 mol of O2 in a reactor.Calculate the largest amount of H2O that could be produced.Round... more
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09/30/20

An electromagnetic wave has a wave length of 767 nm. What is that in meters?
Please help need answer soon need work if possible
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09/29/20

Electrolysis is used to break liquid water into hydrogen and oxygen gas. If I begin with 10 grams of liquid water, will the total mass of the two gases be greater than, less than, or equal to 10? Why?
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09/29/20

24 is 4 times as great as k.

solve for k pleaseeeeeeeeeeeeeeeeeeeeeeee
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09/29/20

Chemistry Help!!
Oxygen has three different isotopes of the following masses 15.995 AMU, 16.995 AMU, 17.999 AMU. Knowing the average atomic mass is 15.999 AMU which isotope has the greatest percent of abundance.
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09/29/20

Chemistry Periodic Table

The image shows the representation of an unknown element in the periodic table.Answer Choices:Based on the representation, which of the following statements about the element is true? (3... more
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09/29/20

What is the density of the iron nugget?
An iron nugget weighing 8.14 g was placed in a graduated cylinder and 25.1 cm3 of water was added to the cylinder. The total volume after adding the water was 26.2 cm3.What is the density of the... more
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09/29/20

Electrolysis is used to break liquid water into hydrogen and oxygen gas. If I begin with 10 grams of liquid water, will the total mass of the two gases be greater than, less than, or equal to 10? Why?
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09/29/20

finance algebra

Aileen is a sales person at Lopez sporting goods, she is paid monthly commissions on all little league outfits she receives 10% of her first $2,000 in sales and 12% of her balance in sales. Last... more
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09/28/20

Glisan Corporation's relevant range of activity is 4,000 units to 8,000 units. When it produces and sells 6,000 units, its average costs per unit are as follows:
Glisan Corporation's relevant range of activity is 4,000 units to 8,000 units. When it produces and sells 6,000 units, its average costs per unit are as follows: average cost... more
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09/28/20

Find the equation of a line that is parallel to the line y = 4x and contains the point (4, -6).
Find the equation of a line that is parallel to the line y = 4x and contains the point (4, -6).
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09/28/20

12 less than the product of 3 and a number is equal to 5
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09/28/20

n = n + 8 = -1 +3(n + 6)
There are five consecutive odd integers. The sum of the three smallest is 3 more than the sum of the two largest. Find the integers.
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09/28/20

Part of the proceeds from the garage sale was $350 worth of $10 and $20 bills if there were two more $10 bills than $20 bills find the number of each denomination
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09/28/20

Mass of CO in grams
Suppose that polluted air has carbon monoxide levels of 15.0 L CO per 1.0 × 106 L of air. An average human inhales approximately 5.0 × 102 mL of air per breath and takes about 15 breaths per... more
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09/27/20

Algebra word problems
A 20-foot ladder is leaning against a building. The base of the ladder is 12 feet from the side of the building. How high does the ladder reach along the side of the building? lost you in the math... more
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09/26/20

How many grams of sodium sulfide are formed if 1.25 g of hydrogen sulfide is bubbled into a solution containing 2.00 g of sodium hydroxide, assuming that the sodium sulfide is made in 92.0 % yield?
 When hydrogen sulfide gas is bubbled into a solution of sodium hydroxide, the reaction forms sodium sulfide and water. How many grams of sodium sulfide are formed if 1.25 g of hydrogen sulfide is... more
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