1,698 Answered Questions for the topic biochemistry

11/01/21

-------CHEMISTRY------------
Explain the mechanism of catalyst in increasing and decreasing the rate of chemical reaction.
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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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Biochemistry Biology Chemistry Physics

10/29/21

What is the structure of Covid?

What is the structure of Covid? It requires advanced understanding of geomtry, trigonometry, calculus, amino acids, organic chemistry, biochemistry, and various other knowledge areas.
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Biochemistry Biology

10/27/21

how is the structure of an enzyme specific to its functioning?
I don’t understand this please help.
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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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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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Biochemistry

10/24/21

Suppose you have a protein sample and its concentration is 10mg/ml. If you take 0.5 ml aliquot and make up to 3 ml. How many mg protein is present in ml of fraction?
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10/22/21

A lotion vehicle contains 15% v/v of glycerin. How much glycerin in grams should be used in preparing 5 gallons of the lotion?

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Biochemistry Biology Chemistry

10/21/21

The number of valence electrons found in an atom of a Group A element is equal to
A. atomic numberB. Group numberC. EightD. Eight minus the group number
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Biochemistry Biology Ap Biology

10/16/21

AP Biology Question
When planting crops, farmers rotate the types of plants that are planted for harvest in order to prevent the soil from being leached of essential minerals. If a farmer plants a crop that leaches... more
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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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10/10/21

Chemistry Help... N2 + 3 H2 produces 2 NH3

How many moles of ammonia are produced when 2.5 moles of hydrogen (H2) react? How many moles of nitrogen (N2) are needed to react when 2.5 moles of hydrogen react?How many grams of ammonia are... 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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