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lara [203]
3 years ago
8

The reactivity of elements can be predicted based on the position of an element in the periodic table. Based on the periodic tab

le, which of the following elements would be expected to be the most reactive?
Iodine (I)
Iodine (I)

Chlorine (Cl)
Chlorine (Cl)

Fluorine (F)
Fluorine (F)

Bromine (Br)
Chemistry
1 answer:
Viefleur [7K]3 years ago
4 0

Answer:

Chlorine (Cl) is most reactive out the the listed elements.

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Which of these molecules is an important source of ENERGY for most organisms?
Nitella [24]

Answer:

Glucose

Explanation:

Glucose molecule is the primary source of energy for most organisms where processes such as glycolysis starts and cellular respiration follows. Bodies of organisms can get energy from carbohydrates, proteins and fats with carbohydrates being the main component for energy where they are converted to glucose which is a form of sugar that reacts to affect blood sugar levels within an hour or two hours after eating.

The second answer option, table salt (NaCl) is incorrect because sodium added in food is vital for functioning of nerves and muscles. Additionally, it helps in fluid regulation and control of blood pressure/volume in the body.

The third answer , hydrochloric acid is not correct because presence of hydrochloric acid in the body helps in breaking down, digestion and absorption of nutrients.

The correct answer choices are : A and D.

6 0
3 years ago
What is the molar mass of CuCIO3
Genrish500 [490]
<h3>Answer:</h3>

147.05 g/mol

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Reading a Periodic Table
<h3>Explanation:</h3>

<u>Step 1: Define</u>

CuClO₃

<u>Step 2: Find MM</u>

Molar Mass of Cu - 63.55 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of CuClO₃ - 63.55 + 35.45 + 3(16.00) = 147.05 g/mol

5 0
3 years ago
Which hybrid orbitals would be formed if one s orbital and three p orbitals combined?
LekaFEV [45]
<span>Atomic, Equal, Type.</span>
8 0
3 years ago
Read 2 more answers
Is the normal resting position of an object.
NemiM [27]

Answer:

being stationary relative to a particular frame of reference or another object; when the position of a body with respect to its surroundings does not change with time it is said to be at rest

Explanation:

4 0
3 years ago
Commercial concentrated aqueous ammonia is 28% NH3 by mass and has a density of 0.90 g/mL. You may want to reference (Pages 539
katen-ka-za [31]

Answer:

The molarity of this solution is 14.82 mol/dm3 or 14.82 mol/L

Explanation:

  • Molarity is the number of mole present in 1 Litre of solution. Molarity of a solution is a term referred to as concentration of a solution. The unit of Molarity is Mol/dm3 or Mol/L.
  • let us make an assumption that the volume of the ammonia solution is 1L or 1dm3. Also, 1L = 1000 mL.

Step 1: calculate the mass of the solution

Density = 0.90g/ml (from the question)

             Density = mass/ volume

Therefore Mass = density x  volume

                          =  0.90g/ml x 1000ml

                mass =  900 g

Step 2: calculate the mass of NH3 present in the solution

Since the concentrated aqueous of ammonia is 28%, It signifies that 1000ml of the solution contains 28% Ammonia

Recall from the above calculation that the mass of 1000 ml of solution is 900 g.

Therefore the mass of ammonia will be 28% of 900 g

                  mass of NH3 = 0.28 x 900 g

                                         = 252 g

Step 3: calculate the number of mole of NH3

        mole = mass/ molar mass

molar mass of NH3 = 17 g/mol

Therefore mole of NH3 = 252/17

                                       = 14.82 mol

Step 4: Calculate Molarity

            Molarity = number of moles/ volume of solution in Litre (L)

            Molarity = 14.82 / 1

            Molarity = 14.82 mol/L

4 0
4 years ago
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