2 years ago

Read the sentence.

Chemistry

1 answer:

elena-s [515]2 years ago

8 0

Answer:

It defines the concept of conservation of matter.

Explanation:

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Explain what the name scandium lll oxide means in terms of electrons lost and gained and identify the correct formula

andre [41]

Scandium lost 3 electrons and gave them to oxygen the formula would be Sc2O3

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3 years ago

fish tank initially contains 35 liters of pure water. Brine of constant, but unknown, concentration of salt is flowing in at 5 l

weeeeeb [17]

Answer:

Therefore, the rate of change in the amount of salt is $\frac{dx}{dt} =( 5c}{ - \frac{x }{20})$

$\frac{grams }{min}$

Explanation:

Given:

Initial volume of water $V = 35$ lit

Flowing rate = 5 $\frac{Lit}{min}$

The rate of change in the amount of salt is given by,

$\frac{dx}{dt} =$ ( Rate of salt enters tank - rate of sat leaves tank )

Since tank is initially filled with water so we write that,

$x(0) = 0$

Let amount of salt in the solution is $c$ ,

$\frac{dx}{dt} = \frac{5c}{1 } - \frac{x(t) \times 5}{100}$

$\frac{dx}{dt} =( 5c}{ - \frac{x }{20})$ $\frac{grams}{min}$

Therefore, the rate of change in the amount of salt is $\frac{dx}{dt} =( 5c}{ - \frac{x }{20})$

$\frac{grams }{min}$

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3 years ago

A chemical reaction was used to separate a sample into its components. What conclusion about the sample can be formed based on t

Dvinal [7]

C, a compound because it means it was made up of more than one element but, still able to be separated from the other compound(s)

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3 years ago

Read 2 more answers

How many atoms are in this formula? 4 O2 A 2

Effectus [21]

Answer:

8 atoms as 4*2=8

Explanation:

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2 years ago

How many liters of carbon dioxide can be produced if 37.8 grams of carbon disulfide react with excess oxygen gas at 28.85 degree

alekssr [168]

37.8 grams of CS2 equals to 37.8/76=0.5 mole. So the products have 0.5 mole CO2 which is 11.2 liters at STP. So according to the gas law, the volume at given condition is 12.4 liters. So the answer should be 12.2 liters.

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2 years ago