12. How many grams of CO are needed to react with an excess of Fe2O3 to produce 209.7 g Fe?

23,581 results, page 69

chemistry

If 1.5 mol of each of the following compounds is completely combusted in oxygen, which one will produce the largest number of moles of H2O and why?

Chemistry

How do you calculate the number of moles of NaOH to add to a liter of 1M NH4CL (pka of NH4+ = 9.25 ) to produce a solution buffering the pH at 8.75 ? thanks

Chemistry

Calculate the molecular mass of sulphur if 35.5 g of sulphure dissolves in 1 00 g of CS2 to produce a solution that has a boiling point of 49.48 c. Thanks to ur helps.

science

The message to produce specific protein is carried from the DNA to the ribosome by means of_________. what should i write in the blank?

physics

A student tries to produce notes of higher frequency by blowing a trumpet harder Discuss whether he will succeed?

Chemistry

How much heat (in kilojoules) is evolved or absorbed in the reaction of 3.35 of with enough carbon monoxide to produce iron metal?

maths-circles

ABCD is a rectangle the line through C perpendicular to AC meets AB produced at X and AD produce at Y . Prove that DBXY are concyclic

chemistry

calculate the amount of Zn(NO3)2 that needs to be added to 724.5 mLs of water to produce a .295 molar solution.

physics

Why does the pitch of the sound produce by blowing over an open end of a bottle change when you have more water in it?

Physics

1. What is happening to that air between the instruments and your ears? 2. How can you produce the change in the frequency? 3. Describe how the notes are produced in a violin?

chemistry

20 mL of propene is reacted with 70 ml of hydrogen at STP to produce propane, according to the equation. Calculate the volume of H2 gas consumed

physics

A 912 kg drag race car accelerates from rest to 108 km/h in 0.795 s. What change in momentum does the force produce?

Science

using the equation c3h5+5o2=3co2+4h2o, calculate the mass of c3h8 that can produce 100g of h2o

science

list atleast ten healthy foods/smoothies/tonics with local produce that can help combat or reduse stress.

C

Most organisations produce a document stating what they expect their members to do to behave in an ethical way. State the name of these documents... Thank you.

CHEM

Which of the following reactions should be fast at room temperature? Which would be slow? Explain A. KCl+AgNO3->KNO3+AgCl B. H2(g)+Cl2(g)->2 HCL(g) I would assume that B would react faster because it has all gases.??

chemistry

the chemical equation of nicotinic acid is C5H4NCOOH + NaOH --> C5H4NCOONa + H2O i need to calculate the intial molar concentration of this acid, based on the ratio in which the acid and base react. Please help i cant figure it out,

physics-nuclear reactors

a) Let's assume a nuclear reactor was a completely isolated system, such that no matter particles can escape from it and the only thing that can get out is energy in the form of heat and radiation. If we weigh the whole reactor before switching it on, and again after it has ...

physics

Two Bals. of masses mA = 45 grams and mB = 65 grams are suspended as shown. The lighter ball is pulled away to a 66 degree angle with the vertical and released: ----------------------------- /| | - /è| | | / | | | 30 cm / | | | mA | | | mA mB - where è = 66 degrees, and the ...

Chemistry

Hello there! I was wondering if you could check my answers for me? I was having trouble and I finally understand. 1. Indicate the oxidation number of carbon and sulfur in the following compounds. A) CO= +2 C) Na2CO3= +4 E) CH4= -4 G) SO2= +4 I) Na2SO4= +6 K) Na2S303= +2 M) ...

CHEMISTRY

Hello there! I was wondering if you could check my answers for me? I was having trouble and I finally understand. 1. Indicate the oxidation number of carbon and sulfur in the following compounds. A) CO= +2 C) Na2CO3= +4 E) CH4= -4 G) SO2= +4 I) Na2SO4= +6 K) Na2S303= +2 M) ...

chemistry

I have posted this once and still cannot get the correct answer. Determine the mass of carbon monoxide that is produced when 45.6 of methane, CH4, react with 73.2 g of oxygen , O2. The products are carbon monoxide and water vapour.

chemistry

What volume (in Liters) of oxygen must react to form 17.0L of carbon dioxide according to the following balanced equation: 2CO(g) + O2(g) --> 2CO2(g) 17.0 L CO2 x (1 moles O2/2 moles CO2) = 17.0 x (1/2) = 8.5 L did i do this problem correctly

Intro to chemistry

Determine the volume of 2.3 M H3PO4 that can completely react with? 340 mLs of a 5.1 M solution of NaOH according to the reaction: 3 NaOH + H3PO4 --> Na3PO4 + 3 H2O stuck on a homework problem..pls help!

Chemistry

Which one of the following pairs of reactants would react together in a Lewis Acid/Lewis Base reaction? a. KOH and HNO2 b. NaOH and HCl c. CH3COOH and HF d. Ag+ and NH3 e. HClO and NH3

Chemistry

Help me please wether i d0ne it right,what is the mass of calcium carbonate is required to react with sulfur dioxide produced by burning 1000 kgs of coal that contain 5% sulfur by mass?tnx

CHEMISTRY

Hydrogen gas and iodine gas react via the equation, H2 + I2 <--> 2HI, and K=76 at 600K. If 0.05 mole of HI is placed in a flask at 600K, what are the equilibrium concentrations of HI, I2, H2? I am very lost at where to even start with this problem

chemistry

Given the following reaction: 4 KO2 + 2 H2O + 4 CO2 ==> 4 KHCO3 + 3 O2 How many moles of O2 will be produced if 2.46 moles of CO2 react completely? moles

science

Sodium react with chlorine to form sodium chloride a substance used in all households 1.Household name of sodium chloride

chem

What would be the reaction between Mn2+ and NH3? is it Mn(NH3)? and would this solution react with HNO3, considering it would already have NO3 in it?

Chemistry

A 0.327 g sample of a mixture of NaOH(s) and NaCl(s) requires 31.5 mL of 0.150 M HCl(aq) to react with all the NaOH(s). What is the mass percentage of the NaOH(s) in the mixture?

chemistry check 2

I know you've read this question too many times already but I just want to make sure I did the last part (Ksp) correctly. 50.0 ml of a 0.0500 M solution of lead (II) nitrate is mixed with 40.0 ml of a 0.200 M solution of sodium iodate at 25°C. Calculate the Pb2+ and IO3- ...

science

why is it needed?

math

help needed

Stat 1

A random sample of 10 miniature Tootsie Rolls was taken from a bag. Each piece was weighed on a very accurate scale. The results in grams were 3.087 3.131 3.241 3.241 3.270 3.353 3.400 3.411 3.437 3.477 (a) Construct a 90 percent confidence interval for the true mean weight. (...

English

4.The author reveals Karla's character to readers by describing. A. What Karla says, does, and thinks.**** B. How jade and other students react to Karla. C. What Karla's teachers tell her. D. Why Karla is embarrassed in the gym.

mircoeconomic

Kate’s Katering provides catered meals, and the catered meals industry is perfectly competitive. Kate’s machinery costs $100 per day and is the only fixed input. Her variable cost is com-prised of the wages paid to the cooks and the food ingredients. The variable cost ...

Physics

A 9 kg lead brick falls from a height of 1.8 m. a) Find the momentum as it reaches the ground. b) What impulse is needed to bring the brick to rest? c) The brick falls onto a carpet 2.0 cm thick. Assuming the force stopping it is constant, find the average force the carpet ...

Chemistry

Aluminum and chlorine gas react together to make Aluminum chloride. What is the limiting reactant if 20.0g of Al and 30.0g of Cl2 are used?how much aluminum chloride was formed?

HELPP !!

Copper(I) ions in aqueous solution react with NH3 according to Cu^+ + 2NH3 --> Cu(NH3)2^+ Kf=6.3x10^10 Calculate the solubility (in g/L) of CuBr (Ksp=6.3x10^-9) in 0.81 M NH3.

Chemistry

0.300 moles of bromine gas (Br2) and 0.500 moles of chlorine gas (Cl2) react to for tribromochlorine (Br3Cl). how many moles of this product will form ?

chemistry

if 62.3 g of zinc react with hydrophosphoric acid (H3PO4) it produces zinc (I) phosphate and hydrogen. how much zinc (I) phosphate is produced?

science

calcium reacts with water to form calcium hydroxide and hydrogen.how many moles of water are required to react with 0.5 mole of calcium?

statistics

A researcher wishes to estimate with 95% confidence the proportion of adults who have high speed internet access. Her estimate must be accurate within 4% of the true proportion. 1. Find the minimum sample size needed using a prior study that found that 48% of the respondents ...

chemistry

You have a 250ml solution of 0.13M calcium iodate. How many grams of potassium iodate need to be added to the solution to begin to precipitate calcium iodate? The solubility product constant for calcium iodate is6.47 *10^-6. B) you have a 250ml solution of 0.13 M calcium ...

english

3. In “The Pigman & Me,” the author creates a mood of suspense by focusing most of the action around a fight between two boys at school. a tree cut almost to its heart. Nonno Frankie’s advice to Paul. concerns about how a girl will react.

chemistry

. A student added 40.0 mL of an NaOH solution to 90.0 mL of 0.400 M HCl. The solution was then treated with an excess of nickel(II) nitrate, resulting in the formation of 1.06 g of Ni(OH)2 precipitate. Determine the concentration of the original NaOH solution.

chemistry

. A student added 40.0 mL of an NaOH solution to 90.0 mL of 0.400 M HCl. The solution was then treated with an excess of nickel(II) nitrate, resulting in the formation of 1.06 g of Ni(OH)2 precipitate. Determine the concentration of the original NaOH solution.

Chemistry

Water is added to 4.267 grams of UF6. The only products are 3.730 grams of a solid containing only uranium, oxygen and fluorine and 0.970 gram of gas. The gas is 95.0% flourine, and the remainder is hydrogen. From data determine the empirical formula of the gas. What fraction ...

chemistry

Water is added to 4.267 grams of UF6. The only products are 3.730 grams of a solid containing only uranium, oxygen and fluorine and 0.970 gram of gas. The gas is 95.0% flourine, and the remainder is hydrogen. From data determine the empirical formula of the gas. What fraction ...

physics

How much paraffin oil would be needed to heat the same volume of water? • Heat capacity of water = 4200 j kg-1 K-1 • Mass of 1 litre of water = 1kg • Heat value of paraffin = 45M J kg-1 • Density of paraffin = 800kg m -3 • 1 cubic centimetre (1cm3 = 10-6 m3) • ...

Science

Which of the following is an example of bioamplification? A. Too many herbivores in an ecosystem, due to loss of predators. B. An oil spill that destroys all marine life. C. An excess of nitrogen which causes algal cloom on the water's surface. D. High levels of DDt found in ...

science

what is the mass in grams of 3.00 mol of Mg

chem

how do you convert grams to moles

science

6.2 kilograms = ____ grams

chemistry

What is the mass in grams of 14.6 amu?

math

how do you convert ounces to grams

math

how do you convert grams to ounces

pre- algebra

what does grams mean??

chemistry

How do I change grams to moles.

chemistry

how many moles are in 25.0 grams of potassium?

chems

how many grams of CO will contain 4.10 x 10^12 molecules

chemistry

how many grams are in 5.2*10^15 atoms of nickel

chemisty

how many grams are in 5.66 mole of of CaCo3

chemistry

How many moles are in 52.3 grams of CaSO4?

4th grade

14,000kg= how many grams

chemistry

how to find grams from 12 moles

chemistry

What is the mass, in grams, of 3.57×10^−2 ?

Chemistry

How many molecules are in 2.6 grams of H2O?

chemistry

how many grams are in 2.4 moles of sulfur?

chemistry

How many grams equal 6.3 mol of N2?

ChemIstry

How any grams are there in 3.69 moles of sliver?

Chemistry

How many moles are there in 52.3 grams of nickel

chemistry

How many grams are in one milliliter?

chemistry

how many grams is 6 mole of oxygen?

chemistry

How many grams are there in 2 moles of sodium?

CHEMISTRY

Grams/mole benzene

chemistry

How many grams of calcium nitrate,

chemistry

How many grams are in 2.25 mole of NaBr?

math

HOW MANY GRAMS OF NH3 CAN BE PRODUCED FROM 15.0 G H2

Chemistry

37 grams of Ca(OH)2 in 500 ml of solution is

chemistry

how to convert from 40.grams to tons

Chemistry

how many grams of F are in 335 g of CaF2?

chem

How many grams are in 3.6 moles of agcl2?

chemistry

What are the total grams of iron

chemistry

How many molecules are in 25 grams of NH3

chemistry

How many molecules are in 25 grams of NH3

CHEMISTRY

HOW MANY GRAMS OF CALCIUM IS 3.08 MOL OF Ca?

Chemistry

what is 39.5 grams of HCl in moles?

chemistry

How many moles are in 4.80 grams on SnO2?

chemistry

how may grams are in 6.1 moles of AIN

math

how many grams go in 2,340 kilograms

chemistry

How many grams of Cl are in 525 g of CaCl2?

metric conversion

100 grams = how many cg

chem

How many grams of BaSO 4 will be formed?

science

how many atoms are in 10.0 grams of sulfur?

science

How many moles are in 44 grams of cao (ca=40,o=16)

Math

Explain how you would design a research study to compare the effectiveness of two weed killers. Both weed killers A and B are known to be effective but it is not known which is more effective and on what type of weeds. Weeds can be broadly classified into “broad leaf” and...

organic chemistry

Michael & Aldol Condensation Reaction We are preparing an a,b-unsaturated ketone via Michael and aldol condensation reactions. The reactants are trans-chalcone and ethyl acetoacetate (in ethanol and NaOH). This creates 6-ethoxycarbonyl-3,5-diphenyl-2-cyclohexenone. What I'm ...

organic chemistry

Michael & Aldol Condensation Reaction We are preparing an a,b-unsaturated ketone via Michael and aldol condensation reactions. The reactants are trans-chalcone and ethyl acetoacetate (in ethanol and NaOH). This creates 6-ethoxycarbonyl-3,5-diphenyl-2-cyclohexenone. What I'm ...

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