What is the empirical of compound (X) going through the following decomposition reaction?

77,997 results, page 73

Literacy

Which one of the following services is provided through the Ask-a-Librarian feature in the Penn Foster Library? A. An analysis of an issue presented in your course B. A historical date or the source of a quote C. An informed opinion on how to improve your graded project D. A ...

science 1 question

which of the following is an example of an effect of natural selection? All of the children of two parents are male. Carbon cycles through ecosystem. Favorable environmental conditions cause an increased food supply. Polar bears have white fur. Is the answer C?

Comm/215

Q: People know they are going to have to retire. They often don't save enough money to do so comfortably. Have to make one subordinate. Peaople know they are going to have to retire, often they don't save enough money to do so comfortably. Is this right?

Chemistry

Is the following a properly written thermochemical equation? 2C8H18 + 25O2 → 16CO2 + 18H2O, ΔH = –5,471 kJ/mol No, the equation does not list the enthalpy of reaction. Yes, the equation is correct. No, the equation does not list the states of each substance. No, the ...

Gen Chem

At elevated temperatures, solid silicon reacts with chlorine gas to form gaseous SiCl4. At some temperature, the equilibrium constant for this reaction is 0.30. If the reaction is started with 0.10 mol of SiCl4 in a one-liter flask, how much Cl2 will be present when ...

English

Identify the term that best describes the words/phrases in parentheses. 1. The teacher asked her pupils to (stay) put during the screening of the documentary. linking verb action verb 2. The committee judged the logo (the most appropriate symbol) for the association’s ...

chemistry

Calculate the cell potential of a cell operating with the following reaction at 25°C, in which [Cr2O72‾ ] = 0.030 M, [I ‾ ] = 0.020, M, [Cr3+ ] = 0.20 M, and [H+ ] = 0.60 M. Cr2O72-(aq) + 6 I ‾(aq) + 14 H+(aq) → 2Cr3+(aq) + 3 I2(s) + 7 H2O(l)

chemistry

The following reaction has an equilibrium constant of 0.50 at a given temperature. HCHO(g) CO(g) + H2(g) If you have 0.55 moles of HCHO(g) in a 1.0L container initially, how many moles of HCHO will be present when the system reaches equilibrium?

Levy

Given the following data: MnO(s) + H2(g) Mn(s) + H2O(l), H = 100 kJ MnO2(s) + 2 H2(g) Mn(s) + 2 H2O(l), H = –52 kJ use Hess's law to calculate the heat of the reaction MnO2(s) + H2(g) MnO(s) + H2O(l)

Chemistry

A voltaic cell utilizes the following reaction and operates at 298K 3Ce{4+}(aq)+Cr(s)--->3Ce{3+}(aq)+Cr{3+}(aq) {}=Charge What is the EMF of this cell under standard conditions? What is emf of cell when [Ce{4+}]=2.1M, [Ce{3+}]=.13M, and [Cr{3+}]=2.0*10^-2

Chemistry

A voltaic cell utilizes the following reaction and operates at 298K 3Ce{4+}(aq)+Cr(s)--->3Ce{3+}(aq)+Cr{3+}(aq) {}=Charge What is the EMF of this cell under standard conditions? What is emf of cell when [Ce{4+}]=2.1M, [Ce{3+}]=.13M, and [Cr{3+}]=2.0*10^-2

chemistry

consider the following reaction at 298K 4Al(s)+3O2(g) yields 2Al2O3(s) delta H= -3351.4 Kj find delta S sys find delta S surr find delta S unvi

Science (Chemistry)

. Complete all the following for the reaction (NH4)2S + Cd(NO3)2 --> CdS(s) + NH4NO3 1. Balance this equation 2. Write the ionic equation 3. Write the net ionic equation

Chemistry

consider the following reaction at 298K 4Al(s)+3O2(g) yields 2Al2O3(s) delta H= -3351.4 Kj find delta S sys find delta S surr find delta S unvi

Help! Help! Organic Chemistry

Alcohol Dehydration of 4-methyl-2-pentanol (a)based on the mechanism of the reaction, explain why (E) and (Z) 4-methyl-2-pentenes and the 2-methyl-2-pentene are the three major alkene products. (b)Explain why the reaction conditions promote carbocation rearrangements between ...

Calculus

A train is heading due west from St. Louis. At noon, a plane flying horizontally due north at a fixed altitude of 4 miles passes directly over the train. When the train has traveled another mile, it is going 80 mph, and the plane has traveled another 5 miles and is going 500 ...

Physics

Car 1 going northward (direction 90 degrees) at 14 m/s in an SUV weighing 2300 kg. car 2 going southwest (direction 225 degrees) at 16 m/s in a car that weighs 1600 kg. it is a completely inelastic collision. What is the direction and speed of the two vehicles immediately ...

language Arts

Which of the following sentences uses perfect these? A. Storm Fever is playing at several different movie theaters? B Storm fever will have stopped playing by next month C Storm Fever has been playing locally for three months D Storm Fever is probably going ti play longer at ...

Organic chemistry

An unknown compound (x) melts at 60°C and is mixed with a compound (y) that melts at 45°C and is soluble in x. Will the Melting point for the mixture start below 45°? I think so, because if you look at ice and salt for an example, salt has a way higher melting point than ...

social studies

Can someone give me a website to get references on creating a timeline tracking the following major themes/paradigm shifts in Ameeican history from World War I through the end of World War II 1945

MEDICAL CODING

Use the CPT manual to assign the appropriate procedure code to the following exercise. Ureteral endoscopy through an established ureterostomy with irrigation and the removal of a foreign body. CPT Code: _____________

Math Answer Check

2.on which of the following lines does the point (7, 1) lie A. y - 5x = 4 B.y = x - 10 C. y=-4x + 3 D. y= -x + 8 Is it B? 3.Find the slope of the line through (-9, -10) & (-2, -5) A -5/7 B 7/5 C 5/7 D -7/5 Is it D? 10. The equation t=0.07c represents tax, t , based on the cost...

Math

1)Solve 3+2(1-x)>6 or 2x+14<=8. Graph the solution set on a number line. The number line I'm working with is: -4 -3 -2 -1 0 1 First solution: 3+2-2x>6 5-2x>6 -2x>1 x> -1/2 for the graph, I have an open circle between 0 and 1 and the arrow going right. Second ...

Chemistry

Upon decomposition, one sample of Magnesium Fluoride produced 1.65 kg of magnesium and 2.57 kg of fluorine. A second sample produces 1.33 kg of magnesium. How much fluorine (in grams) did the second sample produce?

chemistry

Need Help Finishing: Purpose: • To observe a chemical reaction. Materials: • Vinegar (acetic acid, CH3COOH) • Baking soda (NaHCO3) • Measuring cups and spoons • Cup Procedure: 1. Place ½ cup of vinegar in the cup. 2. Add 1 tablespoon on baking soda. 3. Record your ...

Physics

You're approaching an intersection at 50 km/h (13.9 m/s ). You see the light turn yellow when you're 35 m from the intersection. Assume a reaction time of 0.6 s before braking begins and a braking acceleration of -3.0 m/s2. A) will you be able to stop at before the ...

Calculus AB

A hiker walks due east for 40 minutes, then changes course by going South 25 degrees West. After 20 minutes, he changes course again, this time at South 75 degrees East. He goes through this path for one hour after which he heads north reaching his final destination in 15 ...

Chemistry

consider the equation for the following reaction at equilibrium. X+Y<-->2Z+heat the concentration of the product could be increased by 1.adding a catalyst 2.adding more heat to the system 3.increasing the concentration of Y 4.decreasing the concentration of X

CHEM

Consider the following mechanism: STEP 1: A ---> B +C (slow) STEP 2: C+D ---> E (fast) OVERALL: A+D---> B+E Determine the rate law for the overall reaction (where the overall rate constant is represented as k). please help me. how do i do this problem?

chemistry

Consider the following mechanism: STEP 1: A ---> B +C (slow) STEP 2: C+D ---> E (fast) OVERALL: A+D---> B+E Determine the rate law for the overall reaction (where the overall rate constant is represented as k). please help me. how do i do this problem?

chemistry

consider the following reactions O+N2->NO+N Ea=315kj/mol Cl+H2->HCl+H Ea=23kj/mol Why is the activation energy for one much lower that the other. The frequency factor is very close in value for the two. Assume they are the same compute the ratio of the reaction constants...

College Chemistry

Calculate the volume of carbon dioxide produced from .025 g of aluminum carbonate and excess HCl at 25 degrees c and 745 toor according to the following reaction: Al(2)(CO(3)(3)) (aq) + HCl (aq) ----- AlCl(3) (aq) + H(2)O + CO(2) (g) im using the numbers in () to show a number...

Chemistry

Urgent! Considering the following equation. Na2Co3(s)+H3Po4(s)=>Na3Po4(s)+H2O(l)+CO2(g). a) what's the energy amount envolved in the reaction? b)what is the volum of the released gas? c)what the volum of the consumed phosphate acid, considering d=1,69g/ml? Really need to ...

Chemistry

Use half-cells to balance the following redox reaction, and label the oxidation and reduction half-reactions. Also, note that bromide is a spectator ion and can be eliminated. FeBr(aq) +Mg(s) = Fe(s) + MgBr2(aq) Fe^+2 -2e +Br^- e+ + Mg^+2 -2e =Fe^+2 -2e +MgBr2(aq) -2e e+ Idk ...

Chemistry

The following unbalanced equation describes the reaction that can occur when (II) sulfide reacts with oxygen gas to produce lead (Il) oxide and sulfur dioxide gas: PbS+O2---> PbO + SO2 Balance the equation and describe in words the electron transfers that takes place.

chemistry

Observe the diagram of the electrolytic cell (A aqueous solution of molten salt with a power supply). The molten salt is lithium flouride. Write the half reaction occuring at the cathode, following the usual style guide and making sure to balance electrons.

chemistry

Hello, I was confused on this chemistry problem and I was wondering if someone could please help me. 1) Consider the following chemical reaction: 2CH3OH(I) + 3O2 (g) → 2CO2(g) + 4H2O(I) Calculate the number of moles of CO2 produced when 11.25 mL of methanol CH3OH(I) reacted ...

Chemistry

Estimate the rate of the reaction, H2SeO3 + 6I^- + 4H^+ --> Se + 2I3^- + 3H2O given that the rate law for the reaction at 0°C is rate = (5.0 × 105 L5mol-5s-1)[H2SeO3][I-]^3[H+]^2 The reactant concentrations are: [H2SeO3] = 1.5 × 10-2 M [I-] = 2.4 × 10-3 M [H+] = 1.5 × ...

sra JMcGuin spanish

Hi I went through the review packet - I would also have to scan the book pages the final is on the 13th of January. I would be willing to meet anytime next week sat or sunday - and have your tutor. I have been told you are the only that makes spanish make sense - with all a's ...

chemistry

How do you figure out the answer for the reverse reaction? At 350 K the value of Kp for the equilibrium represented by the balanced equation is 2.87 x 10-2. Calculate the value of Kc for the reverse reaction at the same temperature. Express answer in scientific notation. 2NOBr...

Science

A neutralization reaction between an acid and a base produced the salt Na2CO3. What acid and what base participated in this reaction? ---------------- Sorry about just asking without showing work or anything, but I don't really get the concept of this and how I should go about...

chemistry

Hydrogen gas (7.0 mL) is mixed with chlorine gas(4.0 mL) at a certain pressure and temperature. A reaction between H2and Cl2 is initiated by UV light. If pressure and temperature are kept constant, which gases and in which volumes will be found after the reaction is completed?

Chemistry

Explain the reaction that would occur in a galvanic cell between solutions of Al3+ and Pb2+. Identify the oxidation and reduction reactions and the location of each reaction. Then, use the standard reduction potential tables to determine the cell potential.

chemistry

Write the balanced equation for the reaction of aqueous Pb(ClO3)2 with aqueous NaI. Include phases. What mass of precipitate will form if 1.50 L of highly concentrated Pb(ClO3)2 is mixed with 0.350 L of 0.290 M NaI? Assume the reaction goes to completion.

AP Chemistry!!!

Explain the reaction that would occur in a galvanic cell between solutions of Al3+ and Pb2+. Identify the oxidation and reduction reactions and the location of each reaction. Then, use the standard reduction potential tables to determine the cell potential.

Physics

In fusion reaction two light nuclie fuse together to form one heavy nucleus.. We know like charges repel each other then how it's possible for the nuclie to fuse 2gether. 2. How is energy released during fusion reaction.a

Chemistry;Check?!

Can you check these? Strong attractive forces that keep atoms connected together are called _____. A. valence electrons B. chemical bonds C. cations D. anions Which of the following is NOT a type of bonding that occurs between atoms? A. covalent bonding B. metallic bonding C. ...

physics

The drawing shows the top view of two doors. The doors are uniform and identical. Door A rotates about an axis through its left edge, and door B rotates about an axis through its center. The same force is applied perpendicular to each door at its right edge, and the force ...

physics

The drawing shows the top view of two doors. The doors are uniform and identical. Door A rotates about an axis through its left edge, and door B rotates about an axis through its center. The same force is applied perpendicular to each door at its right edge, and the force ...

Chemistry

The reform reaction between steam and gaseous methane () produces "synthesis gas," a mixture of carbon monoxide gas and dihydrogen gas. Synthesis gas is one of the most widely used industrial chemicals, and is the major industrial source of hydrogen. Suppose a chemical ...

algebra

Write an equation in slope-intercept form for each described line. 1.The line passes through (3,-3)and is parallel to the graph. 2.The line passes through (2,-4) and is parallel to the graph of y=2x-5. 3.The line passes through the orgin with slope 2 - 3

Chemistry

For the following reaction, the equilibrium constant KC = 97.0 at 900 K. If the initial concentrations of NH3 and H2S are both 0.20 M, what is the equilibrium concentration of H2S? H2S (g) + NH3 (g) ---> NH4HS (s)

Chemistry

For the following reaction, the equilibrium constant KC = 97.0 at 900 K. If the initial concentrations of NH3 and H2S are both 0.20 M, what is the equilibrium concentration of H2S? H2S (g) + NH3 (g) ---> NH4HS (s)

algebra

solve the compound inequality 3x-5>-17 and 4x+3<15 my answer: -4<x<3 Answered in another post.

College Algebra

Could you please help me with this problem? We are to graph each compound inequality. x ¡Ý -2y and x - 3y < 6

English

I can't unscramble this word it is a compound or a collective noun it is afsedrniru

chemistry

Determine a compound that will precipitate the (Hg2)^2+ in Hg2X2(soluble).

biologgyy HELP ME!

what compound is formed from carbon dioxide in the calvin cycle?

Chemistry

Write the formula for each Ionic compound. *barium nitrate

chemstry

How could you tell if a compound consistd of ions if it does not dissolve in water?

chemistry

How can you tell if a compound consists of ions if it does not dissolve in water?

science

Ddraw an electron dot structure for a compound of fluorine and Z?

physical science

What is a compound that has water chemically attached to its ions?

Science Chemistry

What is molecule, element, and compound? What is the relationships between them?

science

what compound is formed if you combine iron, sulphur and oxygen?

grammar

identify simple complete and compound subject and predicate

chemistry

a compound contains only c,h and o. c=48.65% and h=8.11%.a)calculate its emperical formula

Chem

a dibasic compound , B, has pkb2 = 6.00. Find the fraction in the form of BH+ at pH 9.00

chemistry

Would the compound K2O be considered soluble in water

9th grade

What is the difference between compound and complex sentences?

physics

the oxidation numbers of the elements in a compound must add up to

physics

the oxidation numbers of the elements in a compound must add up to what

Science-Chemistry

What compound is made when sodium is burned in air

chemistry

In a laboratory setting, how would you determine if a compound was a hydrate?

chemistry

What is the percentage of water to the nearest tenth in this compound?Ba(OH)2*8H2O

Chemistry

Aluminum is an example of what? a-a compound b-a solution c-an element d-an alloy

Chemistry

The percentage composition of chlorine, by mass, in the compound K2PtCl4 is

metric system

label parts of compound light microscope

chem

how do you tell the difference between an ionic or a molecular compound? thanks

chemistry

Can you make a compound and show the electrons for magnesium and sulfur

chemistry

What is the formula for the compound formed when potassium reacts with nitrogen?

Chemistry

what is the gram molecular mass of the compound with the formula CH3COOH ? (1)22.4 g (2)44.0 g (3)48.0 g (4)60.0 g

chemistry

can fractional distillation be used to determine purity of a compound?

chemistry

what is the name of the compound made ofrom chlorine and magnesium

cis 115

So what logic is used when pseudocoding compound conditions

chemistry

What quantity of solid compound? 300ml of 4% (w/v) ammonium chloride.

chemistry

What quantity of solid compound? 300ml of 4% (w/v) ammonium chloride.

chemistry

How do you find the moler mass of a compound like H2O?

Chemistry

What physical properties can you use to verify the identity of a compound?

Chemistry

I need the structural formulas for the organic compound 1,3,5 Trichlorocyclohexane

english

could you please let me know the distintion between compound words and collocations ...

chemistry

The compound X4C3 contains 15.03% carbon. What is the chemical symbol for X ?

Math 116a

7X+4>-13 or 9x+4>-23 The solution of the compound inequality is ? I am totally lost!!!!!!!!

Math 116 A

7X+4>-13 or 9x+4>-23 The solution of the compound inequality is ? I am totally lost!!!!!!!!

chemestry

calculate the moles of compound in .540g of ammonium bromide

chemistry

The compound X4C3 contains 15.03% carbon. What is the chemical symbol for X ?

chemistry

Write a formula for the compound that forms from potassium and acetate.

Chemistry

What is the name of the compound PBr5 using the Stock system?

Math

Find the compound form of v, given the magnitude of ||v||=3 and v in the direction of 3i + 4j.

chemistry

Find the formula for the compound that contains 72.4% iron and 27.6% oxygen.

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