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Naddik [55]
4 years ago
13

1.______ structure is achieved when a protein folds into a compact, three-dimensional between side-chain R groups of amino acids

.2.______ structure is the sequence of amino acids in a protein.3.______ structure describes the alpha helices and beta-sheets that are formed by hydrogen bonding between backbone atoms located near each other in the polypeptide chain.4.______ structure is the result of two or more protein subunits assembling to form a larger, biologically active protein complex.a. Primary,
b. Secondary,
c. tertiary,
d. quaternary
Chemistry
1 answer:
kondor19780726 [428]4 years ago
5 0

Answer:

The answer to your question is:

Explanation:

1._<u>Terciary</u>__ structure is achieved when a protein folds into a compact, three-dimensional between side-chain R groups of amino acids.

2._<u>Primary</u>___ structure is the sequence of amino acids in a protein.

3._<u>Secondary</u>___ structure describes the alpha helices and beta-sheets that are formed by hydrogen bonding between backbone atoms located near each other in the polypeptide chain.

4._<u>Quaternary</u>___ structure is the result of two or more protein subunits assembling to form a larger, biologically active protein complex.

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Determine how many grams of N2 are produced from the reaction of 8.37 g of H2O2 and 5.29 g of N2H4.
Dmitriy789 [7]
N₂H₄  +  2H₂O₂    →   N₂  +  4H₂O

mol = mass ÷ molar mass

If mass of hydrazine (N₂H₄)  = 5.29 g 
then mol of hydrazine           = 5.29 g ÷ ((14 ×2) + (1 × 4))
                                              = 0.165 mol

mole ratio of hydrazine to Nitogen is     1   :  1
  ∴ if moles of hydrazine = 0.165 mol
     then moles of nitrogen = 0.165 mol

Mass = mol × molar mass

Since mol of nitrogen (N₂)  = 0.165
then mass of hydrazine      = 0.165 × (14 × 2)
                                           = 4.62 g
5 0
3 years ago
5.6 moles of gold contain how many atoms? A. 34 atoms B. 9.3 × 10-22 atoms C. 9.3 × 1023 atoms D. 3.4 × 1024 atoms
Elza [17]

Answer:

the awnswer would be d

Explanation:

5 0
4 years ago
Read 2 more answers
On a recent excursion chemistry student extraordinaire, Melvin Blackthorne, found a gold colored coin at a flea market. The vend
ankoles [38]

Explanation:

What is the density of the coin?

Formular for density = Mass / Volume

Mass of coin = 18.82g

Volume occupied = 7.3ml - 5.2ml = 2.1ml

Density = 18.82 / 2.1 = 8.9619g/ml

what is the mass of the iceberg in metric tons (1 metric ton = 1000 kg)?

Density = 0.9I68g/cm^3

Volume = 35,000 m^3 = 3.5e+10cm^3 (Conversion to cm^3)

Mass = Volume * Density = 3.5 * 10^10 * 0.9I68 = 3.2088 * 10^10g

Upon conversion to kg by dividing by 1000

Mass = 3.2088 * 10^7kg

(1 metric ton = 1000 kg)

Mass = 3.2088 * 10^3 metric tonnes

In your own words explain how Archimedes' principle can be used to measure the volume of an irregularly shaped solid.

By definition, all matter has mass and occupy space. Archimedes' principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces. And the weight of fluid displaced is the volume of fluid.

So the volume is obtaiined by placing the irregularly shaoed solid and noting the volume of fluif displaced.

what volume of water (d = 1.000g/mL) is about to impact Melinda's head?

Volume of sphere = V = (1 / 6) πd³

Inserting the value of V = 10.7 cm

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4 0
4 years ago
Y’all boi needs help g
hram777 [196]

Answer:

c and d, are you supposed to check 3? or only 2?

6 0
3 years ago
A titration is performed on a 25.0 mL sample of calcium hydroxide. A volume of
slamgirl [31]

Answer:

\boxed {\boxed {\sf 0.28 \ M}}

Explanation:

Titration is a method used to determine the concentration of a substance. The  formula for this is:

M_AV_A= M_BV_B

Where M is the molarity of the acid or base and V is the volume of the acid or base.

We know that 46.0 milliliters of a 0.15 molar solution of nitric acid wereused in the titration. 25.0 milliliters of solution of calcium hydroxide of unknown molarity were also used.

\bullet \  M_A= 0.15 \ M \\\bullet \  V_A= 46.0 \ mL\\\bullet \  V_B= 25.0 \ mL

Substitute these known values into the formula.

0.15 \ M * 46.0 \ mL= M_B * 25.0 \ mL

We are solving for the molarity of the base, so we must isolate the variable M_B. It is being multiplied by 25.0 milliliters. The inverse operation of multiplication is division, so we divide both sides of the equation by 25.0 mL.

\frac {0.15 \ M * 46.0 \ mL}{25.0 \ mL}= \frac{M_B * 25.0 \ mL}{25.0 \ mL}

\frac {0.15 \ M * 46.0 \ mL}{25.0 \ mL}= M_B

The units of milliliters (mL) cancel.

\frac {0.15 \ M * 46.0 }{25.0}=M_B

\frac {6.9}{25.0 } \ M =M_B

0.276 \ M = M_B

The original measurements have 2 or 3 significant figures. We always round our answer to the least number of sig figs, which is 2. For the number we calculated, that is the hundredths place. The 6 in the thousandths place tells us to round the 7 up to an 8.

0.28 \ M \approx M_B

The concentration of calcium hydroxide is approximately <u>0.28 M.</u>

6 0
3 years ago
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