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astra-53 [7]
3 years ago
10

Help answer the questions above

Chemistry
2 answers:
ss7ja [257]3 years ago
5 0

Answer:

See below

Explanation:

  1. The net force was calculated by subtracting the two opposite forces, which were 30 Newtons and 20 Newtons, to get 10 Newtons
  2. They are unbalanced because the person to the right is pulling with a force of 10 Newtons more that the person on the left.
  3. The motion of the treasure chest is to the right by 10 Newtons.

Vote Brainliest, Thx :)

9966 [12]3 years ago
3 0

Answer: i think i have number one (this might be wrong but i tried and its what i got taught)

Explanation:

as you can see the two people are pushing it right but if you pay attention to where the arrows point and the length it shows there is more chance of it moving (on my hand) right as there isn't enough force to move it left and the small arrow underneath the chest is the friction and how much friction it causes

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The continents of earth were clutered to gether in formation that a scientist named what
harkovskaia [24]

<u>Answer</u>:

the continents of earth were clustered together in formation that a scientist named Pangaea.

<u>Explanation</u>:

Before 300 million years ago, our earth was not made up of 7 different continent what we have now. Instead it was single huge mass land that was surrounded by a single ocean called  Panthalassa. A lot of  migration and collision lead to the formation of Pangaea. An Scientist named Albert Wegener gave the name Pangaea. Later, Pangaea was broken into  Gondwanaland and Laurasia.These Lands were then divided into 7 continents.

3 0
3 years ago
How many atoms of oxygen (O) are represented in the chemical formula shown below?
Bad White [126]
One atom of oxygen .
7 0
3 years ago
How many millimeters of 12 M HCI will be needed to create a 250-ML solution of 2 HCI?
Anestetic [448]
Call what you have to find is x
nHCl/V=12M 
nHCl=2.0,25=0,5 
->x=0,5.12=6 (600 ml)
6 0
3 years ago
How many kilojoules are required to convert 115.0 g of ice at 0.0 ∘c to liquid water at 32 ∘c? the heat of fusion of water is 33
Ivanshal [37]
The answer is 53.8 kJ.
Solution:There are two major steps in converting ice to liquid water. It begins with a phase change when ice melts at 0.0°C, and then a temperature change when the liquid water rises in temperature from zero to 32°C.
The amount of heat involved with the phase change melting is given by
     q = (mass of water) (ΔHfus)
        = (115.0 g)(334 J/g) 
        = 38410 J = 38.41 kJ
The amount of heat involved with temperature change is 
     q = mcΔT
        = (115.0g)(4.184J/g°C)(32°C - 0.0°C)
        = 15397.12 J = 15.39712 kJ
Summing up the two values gives the total heat required to convert ice to liquid water:
     q = 38.41 kJ + 15.39712 kJ= 53.8 kJ
3 0
3 years ago
A mixture initially contains A, B, and C in the following concentrations: [A] = 0.650 M, [B] = 1.35 M, and [C] = 0.300 M. The fo
dimaraw [331]

<u>Answer:</u> The value of K_c for given reaction is 0.465

<u>Explanation:</u>

We are given:

Initial concentration of A = 0.650 M

Initial concentration of B = 1.35 M

Initial concentration of C = 0.300 M

Equilibrium concentration of A = 0.550 M

Equilibrium concentration of B = 0.400 M

For the given chemical equation:

                           A+2B\rightarrow C

<u>Initial:</u>                0.65     1.35     0.30

<u>At eqllm:</u>        0.65-x   1.35-2x   0.30+x

Evaluating the value of 'x'

0.650-x=0.550\\\\x=0.100

So, equilibrium concentration of B = 1.35 - 2x = [1.35 - 2(0.100)] = 1.15 M

Equilibrium concentration of C = (0.30 + x) = (0.300 + 0.100) = 0.400 M

The expression of K_c for above equation follows:

K_c=\frac{[C]}{[A][B]^2}

Putting values in above equation, we get:

K_c=\frac{0.400}{0.650\times (1.15)^2}\\\\K_c=0.465

Hence, the value of K_c for given reaction is 0.465

7 0
3 years ago
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