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V125BC [204]
4 years ago
7

Why is co2 collected by downward delivery in preparation​

Chemistry
1 answer:
ozzi4 years ago
5 0

Answer:

pls follow me

mark me as brainiest pls

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1.______ structure is achieved when a protein folds into a compact, three-dimensional between side-chain R groups of amino acids
kondor19780726 [428]

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.

5 0
4 years ago
I need to find the chemical equation
Yuri [45]

Answer:

2NaCN + CaCO3 --> Na2CO3 + Ca(CN)2

Explanation:

Knowing the names gets us: NaCN + CaCO3 --> Na2CO3 + Ca(CN)2

Balance: there are two sodiums and cyanides on the product side so add a 2 to the reactant side.

4 0
3 years ago
How many atoms are present in a sample of Potassium (K) weighing 33.49g?
madam [21]

Answer:

5.158 × 10²³ atoms K

General Formulas and Concepts:

<u>Chemistry - Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis
  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Explanation:

<u>Step 1: Define</u>

33.49 g K

<u>Step 2: Identify Conversions</u>

Avogadro's Number

Molar Mass of K - 39.10 g/mol

<u>Step 3: Convert</u>

<u />33.49 \ g \ K(\frac{1 \ mol \ K}{39.10 \ g \ K} )(\frac{6.022 \cdot 10^{23} \ atoms \ K}{1 \ mol \ K} ) = 5.15797 × 10²³ atoms K

<u>Step 4: Check</u>

<em>We are given 4 sig figs. Follow sig figs and round.</em>

5.15797 × 10²³ atoms K ≈ 5.158 × 10²³ atoms K

3 0
3 years ago
A balloon with a volume of 336.0 mL starts at a temperature of 328K. It is placed in cool water
larisa [96]

Answer:

306.43 K

Explanation:

- Use Charle's law and rearrange formula (V1/T1=V2/T2)

- Hope this helped! Let me know if you would like me to show you step-by-step how to do these types of problems.

7 0
3 years ago
20 g of water. specific heat of water is 4.18 J/x°C. temperature changes from
pashok25 [27]

Answer:

B or the second one

Explanation:

8 0
3 years ago
Read 2 more answers
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