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Ludmilka [50]
3 years ago
15

A small, positively charged ball is moved close to a large, positively charged ball. Which describes how the small ball likely r

esponds when it is released?
Chemistry
1 answer:
Natali5045456 [20]3 years ago
6 0

Answer:

Possible options are:

A. It will move toward the large ball because like charges repel.

B. It will move toward the large ball because like charges attract.

C. it will move away from the large ball because like charges repel.

D. it will move away from the large ball because like charges attract.

Answer: C. it will move away from the large ball because like charges repel.

Explanation:

All things are made up of charges. Opposite charges attract each other (negative to positive). Like charges repel each other (positive to positive or negative to negative). Most of the time positive and negative charges are balanced in an object, which makes that object neutral.

Static electricity is the result of an imbalance between negative and positive charges in an object. These charges can build up on the surface of an object until they find a way to be released or discharged. One way to discharge them is through a circuit.

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A 312 g sample of a metal is heated to 257.128 °C and plunged into 200 g of water at a temperature of 41.933 °C. The final tempe
DENIUS [597]
<h3>Answer:</h3>

0.362 J/g °C

<h3>Explanation:</h3>

We are given:

Mass of metal = 312 g

Initial temperature of the metal = 257.128 °C

Mass of water = 200 g

Initial temperature = 41.933 °C

Final temperature of water = 67.555 °C

Specific heat capacity of water = 4.184 J/g °C

We are required to calculate the specific heat capacity of the metal;

Step 1: Heat gained by water

Quantity of heat = mass × specific heat × change in temperature

Q=m × c × Δt

Change in temperature, Δt = 25.622 °C

Therefore,

Heat gained by water = 200 g × 4.184 J/g °C × 25.622 °C

                                    = 21,440.49 Joules

<h3>Step 2: Heat released by the metal </h3>

Change in temperature of the metal, Δt =(257.128 °C-67.555 °C)

                                                                 = 189.573 °C

Q = mcΔt

Assuming the specific heat capacity of the metal is c

Q= 312 g × 189.573 °C × c

 = 59,146.776c Joules

<h3>Step 3: Calculate the specific heat capacity of the metal</h3>

The heat released by the metal is equivalent to heat gained by water.

Therefore;

59,146.776c J = 21,440.49 J

 c = 21,440.49 J ÷  59,146.776

    = 0.362 J/g °C

Thus, the specific heat capacity of the metal is 0.362 J/g °C

3 0
3 years ago
sing any data you can find in the ALEKS Data resource, calculate the equilibrium constant K at 25.0°C for the following reaction
prisoha [69]

Answer:

2.76 × 10⁻¹¹  

Explanation:

I don’t have access to the ALEKS Data resource, so I used a different source. The number may be different from yours.

1. Calculate the free energy of formation of CCl₄

                         C(s)+ 2Cl₂(g)→ CCl₄(g)

ΔG°/ mol·L⁻¹:       0         0         -65.3

ΔᵣG° = ΔG°f(products) - ΔG°f(reactants) = -65.3 kJ·mol⁻¹

2. Calculate K

\text{The relationship between $\Delta G^{\circ}$ and K  is}\\\Delta G^{\circ} = -RT \ln K

T = (25.0 + 273.15) K = 298.15 K

\begin{array}{rcl}-65 300 & = & -8.314 \times 298.15 \ln K \\65300& = & 2479 \ln K\\26.34 & = & \ln K\\K& = & e^{26.34}\\&= & \mathbf{2.76 \times 10}^{\mathbf{11}}\\\end{array}

3 0
4 years ago
determine the average volume from the following volume reading: 3.00ml, 2.0ml, 2.987 x 10^-3 l, and 3.4856 ml
lesya [120]

Answer:

The average of given values is 2.1221 ml

Explanation:

Given data:

Given measurements = 3.00 ml , 2.0 ml, 2.987 × 10⁻³ml , 3.4856 ml

Average value of given measurements = ?

Solution:

Formula:

Average value = sum of all measurement  / total number of measurements

2.987 × 10⁻³ml = 0.002987 ml

Now we will put the  values.

Average value = 3.00 ml + 2.0 ml + 0.002987 ml+ 3.4856 ml / 4

Average value = 8.488587 ml / 4

Average value =  2.1221 ml

The average of given values is 2.1221 ml

8 0
3 years ago
Using the following information, calculate the theoretical yield for the dehydration of 100.16 g of cyclohexanol. molar mass (g/
nydimaria [60]

Answer:

82.15g of Cyclohexene

Explanation:

The reaction of dehydration of cyclohexanol (CycOH) to cyclohexene (CycENE) is:

CycOH + H₃PO₄ → CycENE + H₂O

<em>That means, 1 mole of cyclohexanol produce 1 mole of cyclohexene.</em>

Now, theoretical yield is defined as the maximum amount of product that could be obtained.

Thus, 100.16g of cyclohexanol could give as theoretical yield of cyclohexene:

100.16g CycOH × (1 mol / 100.16g) = 1 mole of CycOH = 1 mole of CycENE (Assuming a theretical yield).

1 mole CycENE × (82.15g / mol) =

<h3>82.15g of Cyclohexene</h3>
7 0
3 years ago
How does a difference in electronegativity determine the type of bond between<br> elements?
uysha [10]

Answer:

A high difference in electronegativity will be present in ionic compounds since the electrons are transffered from the element less electronegative to the element more electronegative.

A small difference in electronegativity is present in molecular compounds (covalent bonds). None of the elements is strong enough to attract the electrons so the electrons are shared.

Explanation:

A high difference in electronegativity will be present in ionic compounds since the electrons are transffered from the element less electronegative to the element more electronegative.

A small difference in electronegativity is present in molecular compounds (covalent bonds). None of the elements is strong enough to attract the electrons so the electrons are shared.

3 0
3 years ago
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