203 Answered Questions for the topic chemical engineering

11/01/21

CHEMISTRY!!!!!!!!!!!!!!!!!!!!!!!!!
why does when the greater the frequency of successful collisions between reactant particles happens the greater the reaction rate.
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10/28/21

Aluminum Sulfate Safety with Alcohol and Photopolymer Resin
I'm using 99.9% IPA as a wash agent for photopolymer resins before curing. This is usual and customary for the wash process. I have experimented with using Aluminum Sulfate as a flocculant with... more
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10/26/21

Find the morality and molality
16.0 g CH3OH and 50.0 g water are combined to make a solution. What is the molarity and molality of methanol (CH3OH) in the solution if the density of the solution is 0.955 g/mL?
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Chemical Engineering Chemistry Chemistry Biochemistry

10/26/21

Find the electronegativity difference
What is the electronegativity difference of CH3OH?Carbon=2.5 Hydrogen=2.1 Oxygen=3.5a. 1.1b. 5c. 0.9d. none of the above
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10/26/21

Find the molarity of this solution.
In 20.0 degree Celsius, a 0.258 m aqueous solution of C6H12O6 (glucose) has a density of 1.017 g/mL. Find the molarity of this solution.
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10/14/21

Ibuprofen (C13H18O2) is an analgesic (painkiller). What is the molar mass of ibuprofen?

Ibuprofen (C13H18O2) is an analgesic (painkiller). What is the molar mass of ibuprofen? 
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10/14/21

What is the mass of 1 mole of barium sulfate (BaSO4) use to take X rays of the gastrointestinal tract?
What is the mass of 1 mole of barium sulfate (BaSO4) use to take X rays of the gastrointestinal tract? a. 64 g b. 185.33 g c. 233.33 g d. 169.33 g
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10/14/21

A sample of gold contains 7.02 x 1024 atoms. How many moles of gold are there?
A sample of gold contains 7.02 x 1024 atoms. How many moles of gold are there? a. 11.7 x 1023 moles b. 7.02 moles c. 6.022 x 1023 moles d. 11.7 moles
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10/14/21

How many molecules are in 16.8 moles of H2O?
How many molecules are in 16.8 moles of H2O? a. 6.022 x 1023 molecules b. 16.8 molecules c. 1.012 molecules d. 1.012 x 1025 molecules
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10/14/21

How many moles of each type of atom are in one mol of C6H12O6?
How many moles of each type of atom are in one mol of C6H12O6? a. 1 mole of C atoms, 12 moles of H atoms, and 1 mole of O atoms b. 6 mole of C atoms, 12 moles of H atoms, and 1 mole of O... more
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10/09/21

Balance the following chemical equation. Use coefficients in front the reactants or products that need to be balanced. If the coefficient is one, write the number "1"
_________________ MgCl2 + _________________ K → _________________ KCl + _________________ Mg
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10/09/21

Balance the following chemical equation.
Q1 _______________ NaN3 → _______________ Na + _______________ N2Q2_______________ N2H4 + _______________ Cl2 → _______________ N2 +  _______________ HCl
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10/09/21

Balance the following chemical reaction:
 _______________ Fe2O3 + _______________ C → _______________ Fe + _______________ CO2_______________ Li + _______________ N2 → _______________ Li3N
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10/09/21

Match is statement with the correct option: oxidation or reduction
The loss of electrons is _________________.The gain of electrons is _______________.Addition of oxygens is _______________.Removal of oxygens is _________________.Addition of hydrogens is... more
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10/09/21

In each reaction, indicate whether oxidation or reduction is occuring.
N2 → NH3CH2CH3OHCH3 → CH3COCH3Zn → Zn2+ + 2e-HCHO → HCOOHA. reductionB. oxidation
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10/09/21

Identify each type of reaction:
C2H5OH + 3 O2 → 2 CO2 + 3 H2O2 Ca (s) + O2 (g) → 2 CaO (s) CaCO3 (s) → CaO (s) + CO2 (g)C + 2H2 → CH4a. combustionb. decompositionc. combination
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10/09/21

Match the following chemical reactions with the answers "YES" or "NO". Are the following chemical equations balanced?
2 Hg (l) + O2 (g) → Hg2O2 (s)C2H4 (g) + 2 O2 (g) → 2 CO2 (g) + 2 H2O (l)Mg(NO3)2 (s) + 2 Li (s) → Mg (s) + 2 LiNO3 (s)H2 (g) + O2 (g) → H2O (l)a. Nob.Yes
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10/09/21

Match the following chemical reactions with the answers "YES" or "NO". Are the following chemical equations balanced?
2 Hg (l) + O2 (g) → Hg2O2 (s)C2H4 (g) + 2 O2 (g) → 2 CO2 (g) + 2 H2O (l)Mg(NO3)2 (s) + 2 Li (s) → Mg (s) + 2 LiNO3 (s)H2 (g) + O2 (g) → H2O (l)a. Nob.Yes
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10/09/21

What are the products? C + O2 → CO2
a. C and CO2b. O2 only c. CO2d. C only
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Chemical Engineering Chemistry Organic Chemistry Chem

09/30/21

Match the following statements with the correct answer
In a polar covalent bond, electrons are shared ___________________.The type of bond formed between calcium and bromine is ________________The type of bond formed between phosphorus and fluorine is... more
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Chemical Engineering Chemistry Organic Chemistry

09/30/21

Match the following statements with the correct answer
In a polar covalent bond, electrons are shared ___________________.The type of bond formed between calcium and bromine is ________________The type of bond formed between phosphorus and fluorine is... more
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Chemical Engineering Math Science Chemistry

09/15/21

Thermodynamics Basic principles, concept and definitions
Using local g = 9.807 m/s^2, and that its variation is -0.003 ft/s^2 per 1000 ft ascent. Find the height in meters where the weight of a given man is reduced by 0.3%
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Chemical Engineering Math Science Chemistry

09/15/21

Thermodynamics Basic principles, concept and definitions
A garden hose attached with a nozzle is used to fill a 10 gallon bucket. The inner dia of the hose is 2 cm and it reduces to 0.8 cm at the nozzle exit. If it takes 50 seconds to fill the water... more
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Chemical Engineering Science Chemistry Biochemistry

07/27/21

Finding moles in chemistry

How many moles are in 5.07 grams of cobalt (III) bicarbonate?
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Chemical Engineering

06/15/21

How many kilograms of Na2SO4 will contain 100kg of Na?
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