1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tatyana61 [14]
3 years ago
15

A moving train comes to a stop at the station. What happened to

Chemistry
1 answer:
ruslelena [56]3 years ago
8 0
The second one “The train experienced a balanced force.
You might be interested in
A sample of copper absorbs 4.31E+1 kJ of heat, resulting in a temperature rise of 6.71E+1 °C. Determine the mass (in kg) of the
olga2289 [7]

Answer: 1.67 kg

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

Q=m\times c\times \Delta T

Q = Heat absorbed=4.31\times 10^1kJ = 43100J   (1kJ=1000J)

m= mass of substance = ?

c = specific heat capacity = 0.385J/g^0C

Change in temperature ,\Delta T=T_f-T_i=6.71\times 10^1^0C=67.1^0C

Putting in the values, we get:

43100J=m\times 0.385J/g^0C\times 67.1^0C

m=1670g=1.67kg   (1kg=1000g)

Thus the mass (in kg) of the copper sample is 1.67

3 0
3 years ago
Suppose that 25,0 mL of a gas at 725 mmHg and 298K is converted to
posledela

The new volume : 21.85 ml

<h3>Further explanation</h3>

Given

V1=25,0 ml

P1=725 mmHg

T1=298K is converted to

T2=273'K

P2=760 mmHg atm

Required

V2

Solution

Combined gas law :

\tt \dfrac{P_1.V_1}{T_1}=\dfrac{P_2.V_2}{T_2}

Input the value :

V2=(P1.V1.T2)/(P2.T1)

V2=(725 x 25 ml x 273)/(760 x 298)

V2=21.85 ml

5 0
2 years ago
What is the molarity of a 9.0 L solution that contains 0.500 mol HCl?
victus00 [196]

Answer: 0.056

Explanation:

6 0
3 years ago
A chemical reaction produces 56.2 grams of iron (II) sulfide (FeS). How many moles of iron (II) sulfide does the reaction produc
Soloha48 [4]

Answer:

0.639

Explanation:

8 0
3 years ago
Which statement best describes the collisions of gas particles according to the kinetic-molecular theory?
erastovalidia [21]
<span>The statement best describes the collisions of gas particles according to the kinetic-molecular theory is that the collisions of gas particles in an ideal gas are completely elastic. An expansion in the quantity of gas particles in the holder expands the recurrence of impacts with the dividers and in this manner the weight of the gas. The last propose of the motor sub-atomic hypothesis expresses that the normal active vitality of a gas molecule depends just on the temperature of the gas.</span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • How many molecules are in 0.400 moles of. N2O5?
    13·2 answers
  • Suppose you have 100 grams of radioactive plutonium-239 with a half-life of 24,000 years. how many grams of plutonium-239 will r
    12·1 answer
  • Which mass of urea CO(NH2)2 contain the same mass of nitrogen as 101.1g of potassium nitrate?
    11·1 answer
  • Find the number of kilometers in 92.25m.
    13·1 answer
  • A mixture of gases at 2.99 atm can You have two gases, and , at the same temperature. Determine the ratio of effusion rates of a
    8·1 answer
  • Naturally, an atom is neutral in charge? Why?​
    14·1 answer
  • Calculate the average weight of the dogs listed in the chart below.
    10·1 answer
  • What is sublimation ​
    10·2 answers
  • PbBr2<br> +<br> HCI<br> →<br> HBr<br> PbCl2 <br> Balancing chemical reaction
    8·1 answer
  • Solids , liquids are the three different states of matter However , they show some similarities of their properties
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!