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Zepler [3.9K]
4 years ago
7

Using two spring scales, students pull on opposite sides of a dynamic cart at rest. 7 Newtons of force is pulling left and 5 New

tons force is pulling right. Describe the motion of the cart? A) The cart will move to the right. B) The cart will move to the left. C) The cart will not move. D) The cart will move up.
Chemistry
1 answer:
Nadya [2.5K]4 years ago
5 0

Answer is: B) The cart will move to the left.

A newton (N) is the International unit of measure for force.

One newton is the force needed to accelerate one kilogram of mass at the rate of one metre per second squared in direction of the applied force.

The cart will move to the left by the force of 2 newton.

F(cart) = 7 N - 5 N.

F(cart) = 2 N to the left.

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Which of the following types of molecular representations can be used to show differences between isomers? Explain why each can
Ludmilka [50]
Isomer is defined as compounds with the same formula but different arrangement of atoms in its molecule and they differ in their properties. The <span>representation that can be used to show differences between isomers is the use of structural formula.  It shows the arrangement of each atoms. It cant be molecular formula and 3D drawing because it does not show the arrangement of the atoms.</span><span>

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6 0
3 years ago
Material of density of 762 kg/m3 occupies a container
konstantin123 [22]

Answer:

The answer is

<h2>0.075 kg</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

density = 762 kg/m³

We must first convert the volume from cm³ to m³

1 \:  {cm}^{3}  = 1 \times  {10}^{ - 6}  {m}^{3}

So 99 cm³ will be

9.9 \times  {10 }^{ - 5}  \:  \:  {m}^{3}

So the mass of the material is

mass = 762 \times 9.9 \times  {10}^{ - 5}  \\  = 0.075438

We have the final answer as

<h3>0.075 kg</h3>

Hope this helps you

4 0
4 years ago
Read 2 more answers
1. Metallic strontium crystallizes in a face-centered cubic lattice, with one Sr atom per lattice point. If the edge length of t
Zarrin [17]

Answer:

r=215pm

N_{Mn}=20

Explanation:

From the question we are told that:

Edge length of the unit cell l=608pm

a)

Generally the equation for The relationship between edge length and radius is mathematically given by

4r=\sqrt{2a}

Therefore

4r=\sqrt{2*608}

r=\frac{\sqrt{2*608}}{4}

r=215pm

b)

From the question we are told that:

Density \rho=7.297

Edge length of l=630.0 pm=>630*10^-{10}

Therefore Volume  is given as

V=l^3

V=630*10^-{10}^3

V=2.50047*10^{−22}

Generally the equation for Mass is mathematically given by

m=Volume*density

m=V*\rho

m=2.50047*10^{−22}*7.297

m=1.83*10^{-21}g

Therefore Molarity is given as

n=\frac{M}{Molar M}

n=\frac{1.83*10^{-21}g}{55}

n=3.32*10^{-23}

Finally The atoms in a unit cell is

N_{Mn}=Moles*Avogadro\ constant

N_{Mn}=3.32*10^{-23}*6.023*10^{23}

N_{Mn}=20

7 0
3 years ago
Add a temperature of -33.0 Celsius a sample of a confirmed gas eggs or to pressure of 0.5 to 6 ATM if it's volume remains consta
Levart [38]

<u>Answer:</u> The final temperature of the gas is -220.6°C

<u>Explanation:</u>

To calculate the final temperature of the system, we use the equation given by Gay-Lussac Law. This law states that pressure of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

\frac{P_1}{T_1}=\frac{P_2}{T_2}

where,

P_1\text{ and }T_1 are the initial pressure and temperature of the gas.

P_2\text{ and }T_2 are the final pressure and temperature of the gas.

We are given:

P_1=6atm\\T_1=-33^oC=[273-33]K=240K\\P_2=1.31atm\\T_2=?

Putting values in above equation, we get:

\frac{6atm}{240K}=\frac{1.31atm}{T_2}\\\\T_2=\frac{1.31\times 240}{6}=52.4K

Converting the temperature from kelvins to degree Celsius, by using the conversion factor:

T(K)=T(^oC)+273

52.4=T(^oC)+273\\\\T(^oC)=-220.6^oC

Hence, the final temperature of the gas is -220.6°C

3 0
4 years ago
What determines the amount of chemical energy something has
Akimi4 [234]
Chemical energy is the energy stored in atoms that deal with the strictures etc. What determines this is the <span>thermodynamic.</span>
3 0
4 years ago
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