06/02/21

Chromatography and CO2 reduction

How can chromatography and CO2 reduction help combat climate change? I know that chromatography is a technique for the separation of a mixture but I don’t how it might help in combating the climate... more
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06/02/21

Chemistry help!!!
The volume of a gas at 24°C and 0.39 atmis 91 mL. What volume will the same gassample occupy at standard conditions?Answer in units of mL.
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06/01/21

What is the answer ASAP ?

Ethyne gas combusts with oxygen gas according to the following reaction:Calculate the volume, in mL of CO2 produced when  84.4 g of C2H2 react at 62.2 °C and 1.38 atm. (R = 0.0821 L atm/mol... more
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05/31/21

If the pOH of a solution is 11.6 the [H+] would be

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05/29/21

Write the summary using the 5 W’s, 1 H technique
Write the summary using the 5 W’s, 1 H technique.TEXT 2. THE HACKSAW RIDGE MOVIEIn Lynchburg, Desmond Doss and his brother Hal are raised by a dysfunctional family since their father Tom... more
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05/28/21

Using the following balanced equation, how many moles of Iron (II) oxide is produced if you start with 3 moles of oxygen? 2 Fe + O2 → 2 FeO
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05/28/21

Using the following balanced equation, how many moles of water is needed for form 23.4 grams of oxygen? 2 H2O → 2 H2 + O2
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05/28/21

need help algebra 2 its urgent plz

Madison determined that the function f(x)=3x+2/4 represents the cost of texting on her current cell phone plan, where x represents the number of texts.  She discovers that using the inverse... more
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05/28/21

Percent yield of chemical reactions
Aqueous hydrochloric acid HCl reacts with solid sodium hydroxide NaOH to produce aqueous sodium chloride NaCl and liquid water H2OIf 0.370g of water is produced from the reaction of 1.1g of... more
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05/28/21

What is the mole ratio of carbon monoxide to carbon dioxide

2CO+O2 -> 2CO2
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05/28/21

1.50 g of copper was heated with excess sulfur to yield 1.76 g copper(I) sulfide. What is the percent yield?
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05/27/21

The illustration to the left represents a mixture of nitrogen ( blue ) and hydrogen ( light blue ) molecules.
Please help me understand it algebraically through conversion factors, I am not familiar with the logicIf the molecules in the above illustration react to form NH3 according to the... more
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05/26/21

Please help me with these these Chemistry questions.

Based on the graph below, which state of matter (solid, liquid, or gas) is each hydrocarbon in at -100°C? Octane Butane Methane Ethane Hexane, 1-hexene, cyclohexane, and benzene each have six... more
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05/25/21

what is the answer
if f(x)=1-x2+x3, then f(-1)=
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05/25/21

How do you draw the isomer moulecule 3-ethyl-2,4,5-trimethyloctane
Draw the isomer below based on its name. (Hint, start by drawing the base hydrocarbon, octane, and then draw the ethyl and methyl groups off of the correct carbons.) It must be labeled with atoms... more
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05/25/21

Circle the element in each of the following pairs with the greater atomic size: a) sodium or lithium b) silicon or magnesium c) carbon or boron d) selenium or oxygen
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05/24/21

Read Question Below
A bus driver heads south with a steady speed of v1= 20.0 m/s for t1 = 3.00 min, then makes a right turn and travels at v2 = 25.0 m/s for t2 = 3.00 min, and then drives northwest at v3 =... more
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05/24/21

chemistry question

2.  How many grams of water can be produced with 60 grams of sulfuric acid and 200 grams of sodium hydroxide? Which reactant is limiting? How many grams of the excess reactant will be left after... more
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05/22/21

With appropriate example, explain the difference between Catalyst and Catalysis

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05/22/21

Write a function that represents the situation (Algebra 1)
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05/21/21

good explanation needed!

ANSWER WOULD BE B CORRECT ?Her teacher asked her which of the following substances is not made of atoms? *Option 1Option 4Option 3
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05/21/21

How many grams of water (H2O) will be produced from 96.0 grams of oxygen (O2)?

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05/21/21

please i need the answers it’s for physical science
Hydrogen & oxygen react chemically to form water. How much water would form if 10.5 grams of hydrogen reacted with 36.9 grams of oxygen
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05/21/21

A container containing 5.00 L of a gas is collected at -173 °C and then allowed to expand to 20.0 L. What must the new temperature (Celsius) be in order to maintain the same pressure? (127 °C)
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05/21/21

Geometry question
Line a passes through points (7,5) and (3,8). Line b perpendicular to a. What is the slope of line b? Simplify your answer and write it as a proper fraction, improper fraction, or integer.
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