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2 years ago

Which of the following do water, rust, and salt have in common?

Chemistry

2 answers:

Cloud [144]2 years ago

6 0

The answer is "elements" :)

professor190 [17]2 years ago

3 0

Answer: The correct answer is Option D.

Explanation:

Atoms are defined as the smallest unit which cannot be further divided.

Mixtures are defined as the solution win which components are mixed in indefinite proportions. Every substance retain their individual chemical properties.

Elements are defined as the substances which are made from only one type of atoms. Example: Sodium (Na), Oxygen (O), etc...

Compounds are defined as the substances which are made from two or more than two types of atoms in a fixed ratio by their mass. For Example: $H_2O,CO_2$ etc..

We are given:

Three substances having chemical formulas of $H_2O,Fe_2O_3\text{ and }NaCl$

All the substances are made from two types of atoms. Thus, they are all considered as compounds.

Hence, the correct answer is Option D.

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What energy transformations occur in a hot air balloon?

Colt1911 [192]

Answer:

: kinetic energy is the energy transformation that occurs in a hot balloon.

Explanation:

Hot air balloons use a propane burner that converts chemical energy to thermal energy. The hot air is less dense than than the colder air and it lifts the balloon

5 0

2 years ago

Read 2 more answers

Which of these is not an example of a molecule?

r-ruslan [8.4K]

Answer:

Explanation:

5 0

3 years ago

write down the way you had to behave to illustrate the behavior of particles as a gas condenses to form a liquid

Rainbow [258]

Gases near together and vibrate in position however, don't circulate beyond each other. In a liquid, the particles are interested in every different but now not as a great deal as they may be in a strong.

The particles of a liquid are near together, constantly transferring, and may slide beyond one another. The Kinetic-molecular concept attempts to explain the behavior of fuel molecules based totally on the nature of gasoline. The principle is grounded on simple assumptions

In gases the debris passes swiftly in all directions, regularly colliding with every different facet of the box. With a boom in temperature, the debris gains kinetic strength and passes more quickly. Gasoline is a state of matter that has no constant form and no fixed extent. Gases have a decreased density than other states of the count, together with solids and liquids. there may be a high-quality deal of empty area between debris, that have loads of kinetic energy and aren't especially drawn to one another.

Learn more about the behavior of particles here:-brainly.com/question/2456191

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3 0

8 months ago

Calculate the speed. 1. If a car travels 800m in 30 seconds how fast is it going?

Alex787 [66]

Answer:

s = 26.7 m/s

Explanation:

Given data:

Distance travel = 800 m

Time taken = 30 sec

Speed of car = ?

Solution:

Formula:

S = d/t

s = speed

d = distance

t = time

by putting values.

s = 800 m/ 30 s

s = 26.7 m/s

4 0

2 years ago

Cu + 2AgNO3 → Cu(NO3)2 + 2Ag

Eva8 [605]

Answer:

$m_{Ag}=135.8gAg$

$Y=88.4\%$

Explanation:

Hello there!

In this case, according to the described chemical reaction, it is possible to compute the theoretical mass of silver as mass via the 1:2 mole ratio of copper to silver and their atomic mass in the periodic table, in order to perform the following stoichiometric setup:

$m_{Ag}=40.gCu*\frac{1molCu}{63.55gCu}*\frac{2molAg}{1molCu}*\frac{107.87gAg}{1molAg}\\\\ m_{Ag}=135.8gAg$

Next, given the actual yield of 120 g, we compute the percent yield via:

$Y=\frac{120g}{135.8g}*100\%\\\\Y=88.4\%$

Regards!

4 0

2 years ago