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My name is Ann [436]
3 years ago
6

The following models represent three different mixtures of the same solid in water,

Chemistry
1 answer:
velikii [3]3 years ago
3 0

Answer:

A

Explanation:

bcuz the water in it is little

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Calculate a pendulums frequency (in Hz) if the pendulum completes 19 cyclesin 0.5 s.
MAVERICK [17]
1Hz = 1 cycle per second

19 cycles / .5 seconds = 38Hz
8 0
3 years ago
How many molecules are in 1.2 moles of H20?​
Otrada [13]
<h3>Answer:</h3>

7.226 × 10^23 molecules.

<h3>Explanation:</h3>
  • A compound is a substance that is made by two or more atoms from different elements.
  • A mole of a compound contains a number of molecules equivalent to Avogadro's number,  6.022 × 10^23.
  • That is, one mole of a compound contains 6.022 × 10^23 molecules.

In this case we are given;

Number of moles of H₂O as 1.2 moles

But, 1 mole of H₂O contains 6.022 × 10^23 molecules.

We are required to calculate the number of molecules present;

  • To calculate the number of molecules we are going to multiply the number of molecules in one mole by the number of moles.
  • Therefore;

Number of molecules = 1.2 moles × 6.022 × 10^23 molecules/mole

                                    = 7.226 × 10^23 molecules.

Thus, 1.2 moles of water contains 7.226 × 10^23 molecules.

4 0
3 years ago
1. What elements of an organic organization are apparent from the chapter materials on Zappos? (Refer to Exhibit 11.3)
kompoz [17]

Answer: This topic circles organizational design: structure, culture, and control.

Exhibit 11:3 presentation outlines; Exhibit Mechanistic vs. Organic Organizations: The Building Blocks of Organizational Structure

Zappos is an organic organization. The elements in Zappos as an organization include;

• Low degree of specialization

• Flexible division of labor • Employees focus on "bigger picture" • Clear understanding of organization's core competencies and strategic intent • Domain expertise in different areas • Generalized knowledge of how to accomplish strategic goals valued • Distributed decision making • Vertical (top-down and bottom-up) as well as horizontal communication • Flat structures High span of control • Horizontal as well as two-way vertical communication • Mutual adjustment • Differentiation strategy

Explanation: Do reference the exhibit in order source with keywords " Zappos - Exhibit Mechanistic vs. Organic Organizations: The Building Blocks of Organizational Structure"

6 0
3 years ago
N2O4(g) + 4H2(g) → N2(g) + 4H2O(g), solve using standard enthalpies of formation
aev [14]

The standard enthalpy of formation (ΔH_f) is a measure of the energy released or consumed when one mole of a substance is created under standard conditions from its pure elements.

Standard enthalpies (ΔH_f) of formation for given reaction is 978.3 kJ

<h3>What is Standard enthalpies of formation?</h3>

The standard enthalpy of formation is defined as the enthalpy change when one mole of a substance in the standard state (1 atm of pressure and 298.15 K) is formed from its pure elements under the same conditions.

Given reaction ;

N_2O_4(g) + 4H_2 (g) - > N_2(g) + 4H_2O(g)

To Find : ΔH_f

ΔH_f = ∑np ΔH_f (products) – ∑np ΔH_f (reactants)

ΔH_f = [1(ΔH_f N_2) + 4(ΔH_f H_2O)] – [1(ΔH_f N_2O_4) + 4(ΔH_f H_2)]

ΔH_f = [1(0) + 4(-241.8)] – [1(+9.16) + 4(0)]

ΔH_f  = [4(-241.8)] – [1(+9.16)] = 978.3 kJ

Learn more about Enthalpy here ;
brainly.com/question/16720480

#SJF1

7 0
2 years ago
What is the molar mass of C3H803?​
alexandr1967 [171]
The Answer is 92.094
7 0
3 years ago
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