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Zielflug [23.3K]
3 years ago
10

At x = 3, the function given by f(x)={x2 ,6x−9,x<3x≧3 is

SAT
1 answer:
ehidna [41]3 years ago
6 0

Applying the definition, it is found that at x = 3, the value of the function is 9.

The definition of the piece-wise function is:

f(x) = x^2, x < 3

f(x) = 6x - 9, x \geq 3

At x = 3, it enters the second definition, thus:

f(3) = 6(3) - 9 = 18 - 9 = 9

Thus, the value of the function is 9.

A similar problem is given at brainly.com/question/25029892

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Assuming ideal solution behavior, how many liters of hcl gas, measured at 30. 0 °c and 745 torr, are required to prepare 1. 25 l
Nostrana [21]

The volume of HCl gas required to prepare the solution is 101.54 L

<h3>How to determine the mole of HCl </h3>
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  • Molarity = 3.20 M
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Mole = Molarity x Volume

Mole of HCl = 3.2 × 1.25

Mole of HCl = 4 moles

<h3>How to determine the volume of HCl </h3>
  • Number of mole (n) = 4 moles
  • Temperature (T) = 30 °C = 30 + 273 = 303 K
  • Pressure (P) = 745 torr = 745 / 760 = 0.98 atm
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Using the ideal gas equation, the volume of the HCl gas can be obtained as follow:

PV = nRT

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V = nRT / P

V = (4 × 0.0821 × 303) / 0.98

V = 101.54 L

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brainly.com/question/4147359

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3 years ago
circle the correct terms for the reaction going from left to right. reactant a gains/loses and electron to become product B
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The question requires one to indicate the correct terms for the reactant from left to right.

<h3>What is a reactant?</h3>

A reactant is a material that enters and changes during a chemical reaction.

1. Reactant A (Gains/Loses) and electron to become product B

To produce B, reactant A loses one electron. The loss of one electron from an atom causes the atom to be oxidized.

Reactant A gives an electron to NAD+ and is transformed to B+ in the given reaction there is an increase in the positive charge. As a result, reactant A is oxidized to produce B+.

2. NAD+ becomes reduced in the process of the reaction.

NAD+ receives the electron given to it by reactant A and is reduced to NADH. As a result, the positive charge of NAD+ decreases.

3. NADH is more reduced than NAD+

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4. NAD+ is in the more oxidized state compared to NADH

NAD+ has a surplus of positive charge as opposed to NADH. NAD+ must receive one electron in order to produce NADH. As a result, as opposed to NADH, NAD+ is more oxidized.

5. Reactant A is the electron donor in this reaction.

Reactant A loses one electron, resulting in positively charged B+. This electron is taken up by NAD+, which reduces to NADH. As a result,  the electron donor is reactant A.

6. Reactant A is the reducing agent in this reaction.

A reducing agent is a molecule that can transfer electrons.

Such a molecule has the potential to decrease another molecule while also becoming oxidized. Reactant A is the reducing agent in the given reaction, donating an electron to NAD+.

Following the electron transfer, reactant A is oxidized to product B+, and NAD+ is reduced to NADH.

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