2 H2 + O2 > 2 H2O 2 grams + 32 grams > _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include
13,036 results
math
an average sized dog weighs about A. 15 grams B. 50 grams C. 5,000 grams D. 15,00 grams I don't know the answer, please help

chemistry
The solubility of KI is 50 g in 100 g of H2O at 20 ?C. If 110 grams of KI are added to 200 grams of H2O, what would happen?

CHEM MOLES !@@!
Mole Calculation Worksheet 1) How many moles are in 15 grams of lithium? 2) How many grams are in 2.4 moles of sulfur? 3) How many moles are in 22 grams of argon? 4) How many grams are in 88.1 moles of magnesium? 5) How many moles are in 2.3 grams of

Chemistry
When a mixture of 13.0 g of acetylene (C2H2) and 13.0 g of oxygen (O2) is ignited, the resultant combustion reaction produces CO2 and H2O. A)Write the balanced chemical equation for this reaction. B)Which is the limiting reactant? Express in chemical

chem
For the reaction 3NO2 + H2O 2HNO3 + NO, how many grams of HNO3 can form when 1.00 g of NO2 and 2.25 g of H2O are allowed to react? This is a limiting reagent problem. 1. Write the equation. You have done that and it is balanced. 2. Convert 1.00 g NO2 and

chemistry
1)The reaction of methane and oxygen yields carbon dioxide gas and water. The unbalanced reaction is as follows: CH4(g) + O2(g)CO2(g) + H2O(g) A. If 0.718 grams of methane are reacted, how many grams of water vapor are produced? B. If 1.621 grams CO2 are

chemistry
for the reaction ZnO + 2HCl yields ZnCL2 + H2O, what is the maximum amount of ZnCl2 which could be formed from 17.24 grams of ZnO and 6.87 grams of HCl? answer in units of grams.

chemistry
A sample of a hydrate of CuSO4 with a mass of 250 grams was heated until all the water was removed. The sample was then weighed and found to have a mass of 160 grams. What is the formula for the hydrate? CuSO4 * 10 H2O CuSO4 * 7 H2O CuSO4 * 5 H2O CuSO4 * 2

chemistry
how many grams of HNO3 can be produced if 225 grams of NO2 is mixed with 55.2 g of H2O? 3NO2 + H2O=2HNO3 + NO

chemistry
Mg3N2 +6H2O 3Mg(OH)2 + 2NH3 How many grams of H2O are needed to produce 150g of Mg(OH)2? I thought I had this but.....the correct answer should be 93 grams Where did I go wrong?? 1) Change 150 g Mg(OH)2 into moles by dividing by molar mass from periodic

chemistry
Combustion analysis of 1.00g of the male sex hormone, testosterone, yields 2.90 g of CO2 and .875 g H2O. What are the mass percents of carbon, hydrogen, and oxygen in testosterone? How do I solve this? How many grams of C is in 2.90g of CO2? That is the

Org. Chem.
A natural product (MW=150) distills with steam at a boiling temperature of 99 degrees Celsius at atmospheric pressure. The vapor pressure of water at 99 degrees Celsius is 733 mm Hg. A) Calculate the weight of the natural product that codistills with each

chemistry
3. When a mixture of 10.0 grams of acetylene (C2H2) and 10.0 grams of oxygen (O2) is ignited, the resulting combustion reaction produces CO2 and H2O. A) Write a balanced equation for this reaction. B) What is the limiting reactant? C) How many grams of C2,

Pre Calculus
Tritium, a radioactive isotope of hydrogen, has a halflife of 12.4 years. Of an initial sample of 69 grams, how much will remain after 75 years? a. 1.5848 grams b. 61.5289 grams c. 0.0000 grams d. 1.0426 grams e. 17.2500 grams

Math
The Empirical Rule: The weight,in the grams, of the pair of kidneys in adult males the ages of 40 and 49 has a bellshaped distribution with a mean of 325 grams and a standard deviation of 30 grams. A) About 95% of kidney pairs will be between what

Chemistry
Given this equation: 2P2O5 + 6H2O > 4H3PO4. If you begin with 4.8 grams of p2o5 and 15.2 grams h20, what will be your limiting reactant. I got the answer to that and it is P2O5. (6.6 grams) and H2O was 55.2 grams. so the limiting reactant P2O5. Then the

Chemistry
Given the following equation: Na2O + H2O > 2 NaOH. How many grams of NaOH is produced from 1.20 x 10^2 grams of Na2O? How many grams of NaO2 are required to produce 1.60 x 10^2 grams of NaOH?

chemistry
The combustion reaction of acetylene gas is represented by this equation: 2C2H2(g) + 5 O2(g) ==> 4CO2(g) + 2H2O(g) How many grams of CO2 and grams of H2O are produced when 52.0g C2H2 burns in oxygen?

chem
If 34.1 grams of pentane (C5H12) are burned in excess oxygen, how many grams of H2O will be produced?

chemistry
Nitrogen gas can be prepared by passing ammonia over solid copper (II) oxide according to the equation 2 NH3 + 3 CuO (s) > N2 (g) + 3 Cu (s) + 3 H2O (g) Suppose 18.1 grams of ammonia is reacted with 90.4 grams CuO. a) What is the theoretical yield of

Chemistry
Consider the reaction of Lithium with water: 2 Li(s) + 2H2O(l) > 2 LiOH(aq) + H2(g) The delta H of the reaction is 160 KJ The enthalpy of fusion of H2O is 6.0 kJ/mol The specific heat capacity of H2O(l) is 4.18 J/gC When 10 grams of Li(s) is dropped

AP Chemistry
When a sample of methyl salicylate weighing 5.287 grams is burned in excess oxygen, 12.24 grams of CO2 and 2.522 grams of H2O are formed. What is the empirical formula for oil of wintergreen? I know the answer is C8H8O3, I just need help finding out how to

Chemistry
A 0.879 g sample of a CaCl2 ∙ 2 H2O / K2C2O4 ∙ H2O solid salt mixture is dissolved in 150 mL of deionized water. A precipitate forms which is then filtered and dried. The mass of this precipitate is 0.284 g. The limiting reagent in the salt mixture was

Chemistry
These are the answers I got for the following problems  am I right? 1) How many grams of water, H2O, and propene, C3H6, can be formed from the reaction of 6.0 g of 2propanol, C3H8O? C3H8O > C3H6 + H2O 1.8g H2O and 4.2g C3H6 2) How many moles of

chemistry
SrH2 (s)+ 2H2O (l) >>> Sr(OH)2 (s) + 2H2 (g) Calculate the mass of hydrogen gas that can be prepared from 5.22 grams SrH2 and 4.35 grams of H2O. I keep getting 0.729 grams but its wrong...

chemistry
1butanol (shown below) burns in the presence of oxygen to give off carbon dioxide and water by the following reaction: C4H9OH + 6 O2 ==> 4 CO2 + 5 H2O If 40.88 mL of 1butanol burns completely, how many grams of 1butanol have burned? grams =33.1 bu then

Physics
The masses of 1 mole of various gases are as follows: hydrogen about 2 grams, helium about 4 grams, nitrogen about 28 grams, oxygen about 32 grams and carbon dioxide about 44 grams. On the average how fast does a molecule of each gas move at 333 Celsius?

thermodynamics?
calculate the number of grams of glycerol, C3H5(OH)3 (MW=92.1 g/mol), that must be dissolved in 520 grams of water to raise the boiling point to 102.00 degrees Celsius. this whole chapter really lost me. delta T = Kb*molality delta T = 2 degrees. Kb =

Chemistry
Consider: C6H12)6 + 6O2> 6CO2 + 6H2O + Energy a)If I have 90 grams glucose and all is consumed by oxygen, then how many grams of water will be produced? b)How many grams of oxygen will be consumed? c)How many grams of sugar will be burned off if 85 grams

Chemistry
For the balanced equation shown below, if 40.1 grams of C2H3O2Br were reacted with 8.01 grams of O2, how many grams of H2O would be produced? 2C2H3O2Br+O2>4CO+2H2O+2HBr Thank you!

Chemistry  Enthalpy
"Calculate the enthalpy of vaporization of water given that, when 5.00 grams of steam (gaseous H2O) at 100°C was introduced into a beaker containing 500 grams of water at 20.0°C, the temperature rose to 26.2°C." H2O (l) > H2O (g) ΔH = ΔH_vap 5g H2O

chemistry
Iron reacts with superheated steam(H2O) to form hydrogen gas and the oxide Fe2O3. (write) Balance this chemical reaction. And if 10grams of Iron react with excess steam, how many grams of Fe2O3 are produced? How many grams of H gas? How many grams of H2O

ap chem
for the reaction ZnO + 2HCl yields ZnCL2 + H2O, what is the maximum amount of ZnCl2 which could be formed from 17.24 grams of ZnO and 6.87 grams of HCl? answer in units of grams.

CALCULUS
The masses of 10 books are found to be in an arithmetic sequence. If their total mass is 13 kg and the lightest book has a mass of 400 grams, what is the mass of the heaviest book? 2,000 grams 2,100 grams 2,200 grams 2,300 grams 2,700 grams

chem help
The reaction of methane and oxygen yields carbon dioxide gas and water. The unbalanced reaction is as follows: CH4(g) + O2(g)CO2(g) + H2O(g) A. If 1.26 grams of methane are reacted, how many grams of water vapor are produced? B. If 2.796 grams CO2 are

chemistry
a sample of H2O with a mass of 46.0 grams has a temperature of 58.0 degress celcius. how many joules of energy are necessary to melt 46.0 grams of ice?

chem.
How many grams of CO2 and grams of H2O are produced when 13.0g C2H2?

Chemistry
1. Iron oxide and carbon monoxide react according to the following equation . Identify which reactant is limiting and which is excess if 43.5 grams of Fe2O3 reacts with 43.5 grams of CO Fe2O3 + 3CO2 > 3CO2 + 2Fe 2. Calculate the percent yield of Carbon

math
Analyze the pieces of the chemical reaction. 16 grams CH4 44 grams CO2 64 grams O2 36 grams H2O Organize the reactants (what was present before the reaction) and the products (what is present after the reaction) so that the law of conservation of mass has

Chemistry
Yesterday we combined Hydrochloric Acid HCl with Sodium Hydroxide NaOH in a violent reaction that resulted in water H2O and common table salt NaCl. How many grams of hydrochloric acid should we use so we have exactly enough to react with 40g of sodium

Math
The weights of adult longtongued fruit bats are known to be normally distributed with a mean of 20.22 grams and a standard deviation of 3.23 grams. What is the probability that a randomly selected bat will: a) weigh at most 15 grams? b) weigh less than 30

chemistry
At room temperature pure water has a density of 1.00 g/ mL. What mass of water (in grams) will fit into a container if 1.00 lb. of mercury completely fills the container? Okay, here is what I solved so far. Let's say H2o equals water and Hg equals mercury=

chemistry
1. How many grams of P4 will react with 35.0 grams of H2O according to the balanced equation P4+5O2+6H2O=4H3PO4? 2. If you have 50 grams of P4, 40 grams of H2O, and an unlimited supply of O2, which reactant (according to the above balanced equation) is the

science
what will be the law of conversion of a) 65 grams 70 grams b) magnesium + oxygen = magnesium oxide 45 grams ? grams 80 grams c) sodium hydroxide + hydrochoride acid 40 grams 36.5 grams sodium chloride + water ? grams 18 grams

Chemistry
For the reaction 2H2 + 1O2 à 2H2O, there are 8.08 grams of H2 available. 2. Use the ratio of stoichiometric coefficients in the reaction above to determine how many moles of H2O can be produced from the H2 available. Then, use molar mass to convert the

chemistry
if a student mixes 250 grams of Na2O with 300 grams of H2O how many grams of NaOH ?

Chemistry
For the balanced equation shown below, if 40.1 grams of C2H3O2Br were reacted with 8.01 grams of O2, how many grams of H2O would be produced? 2C2H3O2Br+O2>4CO+2H2O+2HBr Thank you!

Chem.. stoichiometry
How many grams of H2 would be formed if 34 grams of carbon reacted with an unlimited amount of H2O? The reaction is: C + H2O → CO + H2 Is this equation balanced?

Chemistry
What is the molarity of the resulting saline solution when you mix 1 mole HCl with 1 mole NaOH? I'll provide some basic information that I know, but could somebody tell me how to get the answer using the data? The balanced reaction is as follows:

Math
Maggie's surprise gift weighs between 8.48 grams and 11.25 grams. Which of these weights could be the weight of the gift? 8.19 Grams 8.75 grams 11.47 grams 11.75 grams ~~~~~~~~~~~~~~~~~~~ How would I show my work on paper for this?

physics
The masses of 1 mole of various gases are as follows: hydrogen about 2 grams, helium about 4 grams, nitrogen about 28 grams, oxygen about 32 grams and carbon dioxide about 44 grams. On the average how fast does a molecule of each gas move at 333 Celsius?

chemistry
Mr. Arswan iss preparing a mixture for a science experiment. He measures 10.5 grams of wood shavings, 150 grams of iron filings, and 18.50 grams of salt. What is the total mass of Mr. Arswan`s mixture? A 30.5 grams B 179 grams C 150.5 grams D 17.9 grams

Statistics
The USDA size standards for eggs are based on weight and are as follows: SMALL: greater than 43 grams, less than 50 grams MEDIUM: greater than 50 grams, less than 57 grams LARGE: greater than 57 grams, less than 64 grams EXTRA LARGE: greater than 64 grams,

Chemistry
If 64.0 g of H2O are actually obtained, find the actual yield %. Show that the % the same whether you calculate using grams or moles. Theoretical yield is 4.04 moles and in grams is 72.80 grams 2H2 + 1O2=2H2O

chemistry
is this the right anser? for this problem please let me know thanks calculate the amount of heat in kilojoules released when 50 grams of steam at 125 C are converted to 50 grams of ice at 125 C so 50 grams of H2O Ti= 124 C Tf= 125 C q=? J=? q=m *Cp * At

math
how do you calculate theoretical yield of something? I don't know where to find the formula You go to the balanced chemical equation, and look at the mole ratio between the reactants and products. The theoretical yield is the value calculated from

Chem Electron Config
A 10.0g sample of C2H5OH is burned completely in air. How many molecules of H2O are formed? 3.92×1023 *How many grams are formed?* did anyone figure out how to get the grams of H2O formed?

Chemistry
60 grams of NaOH, a solid, will dissolve in 40 grams of H2O.what is the solute and solvent for this solution

chemistry
what will be the boiling point 54.5 grams of aluminum sulfate dissolved in 805 grams H2O

Chemistry
Calculate the mass percent (m/m) for the solute in 2 grams of KOH in 20.0 grams of H2O? How do I set this up?

chemistry
60 grams of ethyl alcohol, and 40 grams of H2O form a solution, what are the solute and the solvent

Intro to Chem
How many grams of water, H2O, can be formed from the reaction of 8.9 grams of 2propanol, C3H8O?

Chemistry
If 225.O grams of NO react with excess NH3,how many grams of H2O are produced

chemistry
At what temperature will 85 grams sdium nitrate dissolve in 100 grams H2O? Is it 17 degrees celcius? thank you so much!

Chemistry
The combustion reaction of acetylene gas is represented by this equation: 2 C2H2(g) + 5 O2(g) ==> 4 CO2(g) + 2 H2O(g) How many grams of CO2 and grams of H2O are produced when 52.0g C2H2 burns in oxygen?

chemistry
if CaC2 + 2H2o > C2H2 + Ca(OH) then how many grams of H2o are needed to react with 483 grams of calcium carbide?

chem
How many moles of Ca(OH)2 are produced when 9.19 grams of CaH2 and 7.90 grams of H2O react ?

chemistry
how many grams of H2O will be produced if 65.8 grams of CH3OH completely reacts?

Chemistry
When 1.578 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 4.951 grams of CO2 and 2.027 grams of H2O were produced. In a separate experiment, the molar mass of the compound was found to be 56.11 g/mol. Determine the empirical

Chemistry
Ca(OH)2 reacts with CO2 to form CaCO3 and H2O. A. How many grams of CaCO3 will be formed if 4 grams of Ca(OH)2 are used? B. If you have 2.5 grams of Ca(OH)2 and 0.5 of CO2, which is the limiting reactant?

Stiochiometry
15.8 grams of NH3 and excess O2 produces NO gas and H2O. 12.8 grams of NO gas was produced. Find the percent yield. Balanced Equation: 4 NH3 + 5 O2 > 4 NO + 6 H2O

Chemistry
Consider the reaction 2H2 + O2 > 2H2O What is the mass of water produced when 11.0 grams of O2 reacts with excess H2? Is the answer 22.0 grams of H2O? That's what I got

Math
On my homework packet, it asks how much an average dog weighs, A 15 grams B 50 grams C 5000 grams or D 15000 grams. What is the answer?

Chemistry
The overall cell reaction occurring in an alkaline battery is: Zn(s) + MnO2(s) + H2O(l) > ZnO(s) + Mn(OH)2(s) a) How many moles of electrons flow per mole of reaction?...answer: 2. Mol eNote: b) If 6.09g of zinc is oxidized, how many grams of manganese

Chemistry
H3PO4(aq) + 3 KOH(aq) → K3PO4(aq) + 3 H2O(l) How many grams of potassium hydroxide are required to completely neutralize 3.23 grams of phosphoric acid?

science
Consider a hypothetical reaction in which A and B are reactants, and C and D are products. If 22 grams of A completely reacts with 14 grams of B to produce 9 grams of C, how many grams of D will be produced? Show all work! What law does this question

chem
when hydrocarbons are burned in a limited amount of air CO as well as CO2 form. When 0.450 grams of a particular hydrocarbon was burned in air, 0.467 grams of CO, 0.733 grams of CO2, and 0.450 grams of H20 were formed. a. What is the empirical formula? I

chem
An automobile burns 65 grams of gasoline over 20 minutes. The gasoline combines with 100 grams of oxygen in this reaction, to form carbon dioxide and 47 grams of water. How much carbon dioxide is formed? do I use the heat capacity equation? How much oxyen

chemistery
how many grams of O2 will it take to Oxidize 88 grams of C3H8 to CO and H2O

chemistry
if you are given 25 grams of H2O how many grams of H2 can you produce??? i am lost... help

Chemistry
When 1.5 grams of magnesium burns, how many grams of magnesium oxide will be formed? a) Write a balanced chemical equation for the above reaction. b) Show by unit conversion (show conversion factors, ie. 2 g H20 x 1 mole H2O/18 g H2O x ...... x ...... =

chemistry
From the following combustion: 1butanol + oxygen+ carbon dioxide + water. How many grams of carbon dioxide and water are produced when 130.6 grams of 1butanol is completely burned? I wrote out the equation and got C4H10) + 02= CO2 + H2O. i balanced the

Math
A bag of flour weighs 2.5 kilograms. If 1 bag makes 5 loaves of bread, how many grams of flour are needed for each loaf? A .5 grams B 5 grams C50 grams D500 grams

chemistry
When a piece of copper weighing 250 grams is placed n a cup with 450ml of H2O at 21C and the Cp of te cupis 47J/K, how many grams of gasolne would it tae to heat the system to 110C?

Chemistry
a mixture of .0285g of H and .0141 mol of oxygen in a closed container is sparked to initiate a reaction. How many grams of H2O can form?Which reactant is in excess and how many grams remain?

science
2 H2 + O2 > 2 H2O 2 grams + 32 grams > _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of

science
2 H2 + O2 > 2 H2O 2 grams + 32 grams > _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of

science
2 H2 + O2 > 2 H2O 2 grams + 32 grams > _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of

science need help
2 H2 + O2 > 2 H2O 2 grams + 32 grams > _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of

science
2 H2 + O2 > 2 H2O 2 grams + 32 grams > _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of

Nursing School
how many grams of lithium hydroxide are needed to remove 4500 grams carbon dioxide by a submarine atmospheric regulator and acts according to the following formula? 2LiOh+CO2>Li2CO3+H2O

Chemistry
1. Ammonia gas can be prepared by the following unbalanced equation: _____ CaO(s) + _____ NH4Cl (s) > _____ NH3(g) + _____ H2O(g) + _____ CaCl2(s) a. Balance the equation. CaO + 2NH4Cl = 2NH3 + H2O + CaCl2 b. Suppose you begin this reaction with 112.

Chemistry
A mettallurgist decided to make a special alloy. He melted 30 grams of Au(Gold) with 30 grams of Pb. This melting process resulted to 42 grams of an AuPb alloy and some leftover Pb. This scientist wanted to make 420 grams of this alloy with no leftovers

Chemistry
Is the reaction of 8 grams of natural gas and 38 grams of oxygen gas to form 17 grams of carbon dioxide in 19 grams of water consistent with the law of conservation of mass?

Statistics
A particular fruit's weights are normally distributed, with a mean of 353 grams and a standard deviation of 6 grams. If you pick one fruit at random, what is the probability that it will weigh between 334 grams and 344 grams?

Physics
Four point masses are arranged on the xy plane as follows. Mass1 = 47.0 grams at x = 2.00 cm and y = 2.00 cm. Mass2 = 55.0 grams at x = 0.00 cm and y = 4.00 cm. Mass3 = 27.0 grams at x = 3.00 cm and y = 3.00 cm. Mass4 = 45.0 grams at x = 1.00 cm and y =

math
The weights of adult longtongued fruit bats are known to be normally distributed with a mean of 20.22 grams and a standard deviation of 3.23 grams. What is the probability that a randomly selected bat will: a) weigh at most 15 grams? b) weigh less than 30

stat
1. The amount of pyridoxine (in grams) per multiple vitamin is normally distributed with = 110 grams and = 25 grams. A sample of 25 vitamins is to be selected. So, 95% of all sample means will be greater than how many grams?

Chemistry
4. Suppose there are 72.0 g of O2 available, along with the 8.08 grams of H2. Use ratios of stoichiometric coefficients to find the limiting reagent for the reaction. Then, find the theoretical yield in both moles and grams. 2H2 + 1O2 à 2H2O I got 2.25

chem
if one pound (454g) of hexane combusts how many grams of water are produced? my work: 454 g C6H14 * 1 Mol C6H14/86 g C6H14 * 7H20/1 mol C6H14 * 18 g O2/ 1 MOL H2O = 665.2 grams of H2O