J.R. S.

Science Chemistry

05/08/21

The boiling point of a benzene solution with a non-electrolyte solute is 90°C. Calculate the freezing point of the same solution.

please help. I'm confused with this problem

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Chemistry

05/08/21

is it b ???????

Fe2O3 (molar mass = 159.7 g/mol) reacts with CO (molar mass = 28.0 g/mol) according to the equationFe2O3 (s)+ 3CO (g)→ 3CO2 (g) + 2Fe (s)When 210.2 g Fe2O3 reacts with excess CO, what number of... more

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Chemistry

05/08/21

A block of metal has a mass of 18.361 kg and the following dimensions: 22.35 cm x 7.34 cm x 22.05 mm. What is the density of the metal in g/cm3?

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Chemistry

05/08/21

is it A ???????

Consider that calcium metal reacts with oxygen gas in the air to form calcium oxide. Suppose 6.09 mol of calcium is reacted with 4.00 mol of oxygen gas. Determine the number of moles of oxygen left... more

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Chemistry

05/07/21

use conversion factors to perform the following conversions

what volume would 0.643 moles of oxygen gas occupy at STP?

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Chemistry

05/07/21

Use conversion factors to perform the following conversions

Convert 3.24x10^23 gold atoms to moles of gold.

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Chemistry

05/07/21

ASAP If a current of 7.0 amps is passed through a solution of Z3+ for 2.0 hours, how many grams of Z metal (MM = 144.6) are produced?

If a current of 7.0 amps is passed through a solution of Z3+ for 2.0 hours, how many grams of Z metal (MM = 144.6) are produced?Show all steps and calculations

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Chemistry Organic Chemistry Chem

05/07/21

Based on the value of ∆Go and the chemical reaction, which of the following is true about the reaction?

2 EMZ3(g) ⇌ 2 EZ3(g) + M2(g)∆Gorxn = −350 kJ/molrxnA small sample of EMZ3 is placed into an evacuated, rigid metal container and allowed to reach equilibrium. Based on the value of ∆Go and the... more

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Science Chemistry Organic Chemistry

05/07/21

chemistry question

Which cation is a weak acid?Na+Ba2+Mn4+

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Science Chemistry Organic Chemistry

05/07/21

Chemistry problem

A voltaic cell will generate voltage ifthe half-reactions and concentrations in each half-cell are identicalthe redox reaction has a negative ΔG°the half-reaction with the more negative E° is the... more

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Science Chemistry Organic Chemistry

05/07/21

Chemistry question help

Which pair of compounds will form a buffer?HNO2 and LiNO2HCl and NaClH2SO3 and MgBr2

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Math Science Chemistry

05/07/21

please help me with chemistry

Iron has a specific heat of 0.450 J/g·°C. How much energy is required to raise the temperature of 435 g of iron from 43.0°C to 180.0°C? -------kJ

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Math Science Chemistry

05/07/21

please help me with chemistry

Given an exothermic reaction, which of the following is true?A. ΔH reaction is (+), ΔH surroundings is (-)B. ΔH reaction is (+), ΔH surroundings is (+) C. ΔH reaction is (-), ΔH surroundings is... more

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Chemistry

05/06/21

Can someone please check if my answer to this Chemistry problem is correct? (My answer is in bold.)

For the question, use the following: Phosphorus (P4) burns in Oxygen (O2) to form Diphosphorus Pentoxide.*How much Diphosphorus Pentoxide results if 3.25 moles of Phosphorus are combined with... more

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Chemistry

05/06/21

general chemistry 1

At 1 atm, how much energy is required to heat 57.0 g H2O(s) at −18.0 ∘C to H2O(g) at 161.0 ∘C? Use the heat transfer constants found in this table.answer: q= _____kJ Quantity per gram per... more

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Chemistry

05/06/21

general chemistry 1

Use the molar bond enthalpy data in the table to estimate the value of Δ𝐻∘rxn for the equation.C2H4(g)+HBr(g)⟶C2H5Br(g)Bond: 𝐤𝐉⋅𝐦𝐨𝐥−1C−H 414C=C ... more

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Chemistry Ap Chemistry

05/06/21

What is the TOTAL ionic equation for the following?

Ca(ClO)2(aq) + 4HCl(aq) --> CaCl2(aq) + 2H2O(l) + 2Cl2(g)SrBr2(aq) + K2SO4 (aq) --> SrSO4 (s) + 2 KBr (aq)2 Cr(NO3)3 (aq) + 3 FeSO4 (aq) --> 3 Fe(NO3)2 (aq) + Cr2(SO4)3 (aq)Please keep in... more

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Chemistry

05/06/21

If you produce with 3.7 moles of sulfuric acid, how many moles of hydrochloric acid will be needed? 2HcL + Na2SO4 = NaCl + H2SO4

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Science Biology Chemistry

05/06/21

i need help! chemistry needed

What is the correct term to describe table salt which has a chemical formula of NaCl (Sodium Chloride)?An AtomA MoleculeAn ElementA Compound a compound right ?

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Chemistry Stoichiometry

05/06/21

Working on a quiz and I have no understanding of this. Please help me.

An alkaline battery produces electric energy according to this equation. Zn + 2MnO2 + H2O ---> Zn(OH)2 + Mn2O3 a. If 30.0 grams of zinc and 45.0 grams of manganese (II) oxide are reacted with... more

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Chemistry

05/06/21

Based on this equation; _ C3H8 + _ O2 --> _ CO2 + _ H2O How many moles of C3H8 are needed to make 13.5 moles of CO2? How much O2 is needed? Answer; mol C3H8 Answer; mol O2

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Chemistry

05/06/21

How do you find pH?

A buffer was prepared when someone combined 30 mL of 0.15 M NaF and 30 mL of 0.2 M HF. Ka of HF is 6.6 x 10-4What is the pH of this solution?

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Chemistry

05/06/21

What is the molecular formula of a compound with a molar mass of 253.10 g and an empirical formula of C2H3O?

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Chemistry

05/06/21

What is the mass in grams of 3.7 x 1019 particles of iron(III) carbonate?

This is really confusing to me.

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Chemistry

05/06/21

If there are 0.68 kg of sulfur trioxide at STP, how many liters does this occupy?

I need help with this question

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Answers •1

The boiling point of a benzene solution with a non-electrolyte solute is 90°C. Calculate the freezing point of the same solution.

is it b ???????

A block of metal has a mass of 18.361 kg and the following dimensions: 22.35 cm x 7.34 cm x 22.05 mm. What is the density of the metal in g/cm3?

is it A ???????

use conversion factors to perform the following conversions

Use conversion factors to perform the following conversions

ASAP If a current of 7.0 amps is passed through a solution of Z3+ for 2.0 hours, how many grams of Z metal (MM = 144.6) are produced?

Based on the value of ∆Go and the chemical reaction, which of the following is true about the reaction?

chemistry question

Chemistry problem

Chemistry question help

please help me with chemistry

please help me with chemistry

Can someone please check if my answer to this Chemistry problem is correct? (My answer is in bold.)

general chemistry 1

general chemistry 1

What is the TOTAL ionic equation for the following?

If you produce with 3.7 moles of sulfuric acid, how many moles of hydrochloric acid will be needed? 2HcL + Na2SO4 = NaCl + H2SO4

i need help! chemistry needed

Working on a quiz and I have no understanding of this. Please help me.

Based on this equation; _ C3H8 + _ O2 --> _ CO2 + _ H2O How many moles of C3H8 are needed to make 13.5 moles of CO2? How much O2 is needed? Answer; mol C3H8 Answer; mol O2

How do you find pH?

What is the molecular formula of a compound with a molar mass of 253.10 g and an empirical formula of C2H3O?

What is the mass in grams of 3.7 x 1019 particles of iron(III) carbonate?

If there are 0.68 kg of sulfur trioxide at STP, how many liters does this occupy?

Still looking for help? Get the right answer, fast.

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J.R. S.

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The boiling point of a benzene solution with a non-electrolyte solute is 90°C. Calculate the freezing point of the same solution.

is it b ???????

A block of metal has a mass of 18.361 kg and the following dimensions: 22.35 cm x 7.34 cm x 22.05 mm. What is the density of the metal in g/cm3?

is it A ???????

use conversion factors to perform the following conversions

Use conversion factors to perform the following conversions

ASAP If a current of 7.0 amps is passed through a solution of Z3+ for 2.0 hours, how many grams of Z metal (MM = 144.6) are produced?

Based on the value of ∆Go and the chemical reaction, which of the following is true about the reaction?

chemistry question

Chemistry problem

Chemistry question help

please help me with chemistry

please help me with chemistry

Can someone please check if my answer to this Chemistry problem is correct? (My answer is in bold.)

general chemistry 1

general chemistry 1

What is the TOTAL ionic equation for the following?

If you produce with 3.7 moles of sulfuric acid, how many moles of hydrochloric acid will be needed? 2HcL + Na2SO4 = NaCl + H2SO4

i need help! chemistry needed

Working on a quiz and I have no understanding of this. Please help me.

Based on this equation; ___ C3H8 + ___ O2 --> ___ CO2 + ___ H2O How many moles of C3H8 are needed to make 13.5 moles of CO2? How much O2 is needed? Answer; mol C3H8 Answer; mol O2

How do you find pH?

What is the molecular formula of a compound with a molar mass of 253.10 g and an empirical formula of C2H3O?

What is the mass in grams of 3.7 x 1019 particles of iron(III) carbonate?

If there are 0.68 kg of sulfur trioxide at STP, how many liters does this occupy?

Still looking for help? Get the right answer, fast.

OR

J.R. S.

Based on this equation; _ C3H8 + _ O2 --> _ CO2 + _ H2O How many moles of C3H8 are needed to make 13.5 moles of CO2? How much O2 is needed? Answer; mol C3H8 Answer; mol O2