They apply a cumulative force of 1080 N to push the car 21,800 cm to the nearest fuel station. Determine the work done on the car.

Answer:

temperature is increasing

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Answer:

friction, conduction, and induction

Explanation:

Answer:

A. Condensation

Explanation:

That's the answer to this question

Answer:

A: condensation

Explanation:

it's the right answer

Answer:

1.392 X 106 in satndard form is 147.552. In scientific Notation, it is 1.47552 X 10²

Explanation:

To put it in standard form you multiply 1.392 by 106.

To put it in scientific notation you move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the  10 . If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

Answer:

chemical

Explanation:

because the water puddle disappeared, it is no longer H2O, which is a chemical change

Answer:

chemical

Explanation:

Answer:

radiation

Explanation:

Answer:

radiation

Explanation:

Answer:

C₂H₃₂

Explanation:

Given parameters:

Mass percentage of carbon  = 42.88%

Mass percentage of hydrogen  = 100 - 42.88  = 57.12%

Molecular weight  = 56.02

Unknown:

Molecular formula  = ?

Solution:

To solve this problem, we need to find the empirical formula of the compound first. The empirical formula is the simplest formula of a substance.

 Therefore;

Elements                     Carbon                             Hydrogen

Percentage

composition                  42.88                                   57.12

Molar mass                       12                                         1

Number of moles         42.88/12                               57.12/1

                                         3.57                                     57.12

Simplest

ratio                               3.57/3.57                               57.12/3.57

                                             1                                            16

Empirical formula of the compound is CH₁₆

     Molar mass of  CH₁₆  = 12 + 16(1) = 28g/mol

Multiplying index  = [tex]\frac{molecular weight}{28}[/tex]   = [tex]\frac{56.02}{28}[/tex]    = 2

Molecular formula  = (CH₁₆)₂   = C₂H₃₂

Answer:

I would say element

Explanation:

because it is made of two different types of atoms chemically bonded together!

I'm sorry if wrong!

Answer:

The correct answer is B.

Explanation:

I hope this helps. :)

Explanation:

The absolute temperature is the lowest possible temperature in the universe. At this temperature, all atoms become motionless and cease to move.

The value of the absolute zero is pegged at -273.16°C.

Answer:

The molar mass of carbon is 12.011 g/mol. The molar mass of chlorine is 35.45 g/mol. The molar mass of carbon tetrachloride is 153.81 grams per mole.

Explanation:

Hope this helps

Answer:

An exothermic reaction

Answer:

The baking powder reacts with water to produce bubbles, while baking soda does not react with water.

Explanation:

Answer:

yes

Explanation:

no

Answer:62684

Explanation:

Answer: The answer is 233.3 g

Explanation: The problem is, do you trust me?

Answer:

b I think

Explanation:

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Answer:

The chemicals differ depending on what the surrounding area is like.

Answer:

The answer is Natural selection

Answer:

it c

Explanation:

just took the quiz

The statement, that describes the energy moves between a system of reacting substances and the surroundings is "molecular collisions transfer thermal energy between the system and its surroundings"

Energy is the ability to perform tasks. Energy is a quantitative property that is transferred to a body or a physical system and is visible in the performance of work as well as in the appearance of heat and light. It can take the shape of a potential, kinetic, thermal, electrical, chemical, radioactive, or other substance. Collisions between molecules transmit energy when two bodies come into contact. Molecules transfer thermal energy to one another by collision.

The warmer body transfers more energy to the cooler body until they achieve the same temperature. This is known as thermal equilibrium. This is known as 'energy transferred as heat.'

Hence the correct answer is molecular collisions transfer thermal energy between the system and its surroundings.

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Answer:

For these problems, we need to compare the theoretical yield that we'd get from performing stoichiometry to the actual yield stated in the problem. % yield is the actual yield/theoretical yield x 100%  

Cu + 2 AgNO₠→ Cu(NOâ‚)â‚‚ + 2 Ag ==> each mole of copper yields two moles of silver  

12.7-g Cu x ( 1 mol Cu /63.5-g Cu) x ( 2 mol Ag / 1 mol Cu) x (108-g Ag / 1 mol Ag) = 43.2-g Ag. This is the theoretical yield. Now, since we got 38.1-g Ag our % yield is:

38.1-g/43.2-g x 100% = 88.2%

A reaction between copper metal and silver nitrate should theoretically produce 41.8 g Ag, however in the lab only 32.3 g Ag is actually produced. 12.9% is the percent yield of silver in the given reaction.

The % ratio of the theoretical yield to the actual yield is known as the percent yield. It is calculated as the theoretical yield multiply by 100% divided by the experimental yield. The percent yield equals 100% if the theoretical and actual yields are equal.

Because the real yield is frequently lower than the theoretical value, percent yield is typically lower than 100%. This may be due to incomplete or conflicting reactions or sample loss during recovery.

percent yield = (theoretical yield/experimental yield)×100

percent yield = (41.8/ 32.3)×100

                     = 12.9%

Therefore,  12.9% is the percent yield of silver in the given reaction.

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CH4 is not soluble in water

whereas CH3OH is soluble in water.

Answer:

CH4 is non polar covalent compound and non polar covalent compounds are insoluble in polar covalent compounds like water.

And CH3OH is soluble in water because it polar and also due to hydrogen bonding.

Answer:

mineral

vitamins

carbohydrates

protien

fat

Answer:

3.6  moles

Explanation: i got that quistion right .

The balloon's volume at 35°C : V₂=31.01 L

Given

T₁ = 25°C+273 = 298 K

V₁ = 30 L

T₂ = 35 °C + 273 = 308 K

Required

The new volume (V₂)

Solution

Charles's Law  

When the gas pressure is kept constant, the gas volume is proportional to the temperature  

[tex]\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]

Input the value :

V₂=(V₁.T₂)/T₁

V₂=(30 x 308)/298

V₂=31.01 L

Answer:

because in bellon when we pump he throw carbon dioxide not hydrogen

Answer:

Because helium is lighter than air, a helium balloon rises. Hydrogen is another gas lighter than air; it is even lighter than helium.

Explanation:

Hydrogen is not used in balloons and this demonstration shows why. ... This is because hydrogen burns very easily.

Answer:

Either a windmill or an anemometer

Explanation:

A windmill is usually used as a harvester for wind energy. Anemometers measure wind speed and determine wind direction. Using these sets of data, meteorologists can calculate wind pressure.

Answer:

The mass of the liquid = 162 g

Explanation:

As we know ,  

Q = mc (ΔT)

where Q = Heat energy of the liquid

c = specific heat of the liquid

ΔT = change in temperature

m = mass of the liquid

As given , the temperature increases from 20.°C to 33°C,

⇒ ΔT = 33 - 20 = 13°C

Also given , c = 0.57 cal/g°C

                   Q = 1200 cal

∴ we get

1200 = (m)(0.57)(13)

⇒ 1200 = m(7.41)

⇒m = [tex]\frac{1200}{7.41}[/tex] = 161.943 ≈ 162 g

So, we get

The mass of the liquid = 162 g