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horsena [70]
4 years ago
5

True or False. Water is called the universal solvent because it can dissolve all substances.

Chemistry
1 answer:
Pavlova-9 [17]4 years ago
4 0

Answer: That is true my friend.

Explanation:

Maybe not all substances but it can dissolve more than any other liquid.

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A trucker is driving from New Jersey to California to make a delivery of couches. He forgets to adjust the pressure of his tires
aniked [119]

Answer:

<u>Gay-Lussac's law.</u>

Explanation:

According to Gay-Lussac's pressure law, it states that the pressure of a given mass of gas is <em>directly</em> proportional to the absolute temperature of the gas, the assumption that the volume is kept constant.

Hence, the trucker's tires were blown up because they were under high pressure as he drove from New Jersey to California, as a result of this intense pressure the temperature of the air in the tires began to rise and it directly affected the pressure of the gas in the tires' tubes which also increased to a point that they ended up blowing out, obeying Gay-Lussac's law.

3 0
4 years ago
QUESTION 3. What describes the relationship between a food chain and a food web?
Vitek1552 [10]

Answer: A food chain follows one path of energy and materials between species. A food web is more complex and is a whole system of connected food chains. In a food web, organisms are placed into different trophic levels. Trophic levels include different categories of organisms such as producers, consumers, and decomposers.

HERE IS THE ANSWER NOT THE LINK

HOPE THIS HELPS

7 0
3 years ago
Read 2 more answers
An unknown sample weighing 0.3512g was added to 20.0 mL of cyclohexane. The density of cyclohexane is 0.779g/mL, and the freezin
rjkz [21]

Explanation:

It is known that density is mass of a substance divided by its volume.

Mathematically,         Density = \frac{mass}{volume}

Therefore, calculate the mass of cyclohexane as follows.

             mass of cyclohexane = Density × volume

                                  = 0.779 g/mL \times 20 mL

                                   = 15.58 g

or,                              = 0.01558 kg           (as 1 kg = 1000 g)

As, K_{f} of cyclohexane = 20^{o}C/m  

                 \Delta T_{f} = K_{f} \times molality

                           5.2 = 20 \times molality

                             molality = \frac{5.2}{20}

                                         = 0.26 m

Also, molality is the number of moles of solute present in kg of solvent.

Mathematically,      molality = \frac{\text{no. of moles}}{\text{mass of solvent}}

                         0.26 = \frac{\text{no. of moles}}{0.01558}

                       No. of moles  = 4.05 \times 10^{-3}

As,             No. of moles = \frac{mass}{\frac{molar mass}}      

                    4.05 \times 10^{-3} = \frac{0.3512}{\text{molar mass}}

                             molar mass = 87.0 g/mol

Thus, we can conclude that molar mass of unknown substance is 87.0 g/mole.

4 0
3 years ago
How many neutrons does element X have if its atomic number is 29 and its mass number is 99?
stira [4]
Number of neutrons = mass number - atomic number

= 99-29 = 70 
4 0
4 years ago
If 852.04 g Al(NO3)3 reacted with the 741.93 g Na2CO3, which would be the limiting reagent?
Sedaia [141]

Answer:

Al(NO3)3

Explanation:

6 0
3 years ago
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