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svetoff [14.1K]
4 years ago
6

Whitch of the following is a true statement about the magnetic field between two magnets

Chemistry
1 answer:
grin007 [14]4 years ago
6 0

Answer:

they attract or repel depending on the positives or negatives in the magnet end

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A sample of water vapor has a volume of 3.15 L, a pressure of 2.40 atm, and a temperature of 325 K. What is the new temperature,
lara31 [8.8K]

Answer:

The answer to your question is:   T2 = 235.44 °K

Explanation:

Data

V1 = 3.15 L                    V2 = 2.78 L

P1 = 2.40 atm               P2 = 1.97 atm

T1 = 325°K                    T2 = ?

Formula

\frac{P1V1}{T1} = \frac{P2V2}{T2}

Process

            T2 = (P2V2T1) / (P1V1)

            T2 = (1.97x 2.78x 325) / (2.40 x 3.15)

            T2 = 1779.895 / 7.56

            T2 = 235.44 °K

4 0
3 years ago
Solid lead(11) carbonate reacts with a dilute solution of
vichka [17]

Answer:

PbCO₃ + 2HNO₃ –> Pb(NO₃)₂ + CO₂ + H₂O

Explanation:

From the question given above:

Solid lead (II) carbonate reacts with a dilute solution of nitric acid (HNO₃) to give a solution of lead (II) nitrate,

carbon dioxide and water.

The above can be represented in the equation form as follow:

PbCO₃ + HNO₃ –> Pb(NO₃)₂ + CO₂ + H₂O

Finally, we shall balance the equation as follow:

PbCO₃ + HNO₃ –> Pb(NO₃)₂ + CO₂ + H₂O

There are 2 atoms of H on the right side and 1 atom on the left side. It can be balance by putting 2 in front of HNO₃ as shown below:

PbCO₃ + 2HNO₃ –> Pb(NO₃)₂ + CO₂ + H₂O

Now, the equation is balanced.

5 0
3 years ago
According to the rydberg equation, the line with the shortest wavelength in the emission spectrum of atomic hydrogen is predicte
monitta
It is predicted to lie at a wavelength of 91.2 nm.
Rydberg equation is a mathematical formula that is used to predicts the wavelength of light resulting from an electron moving between energy levels of an atom. Rydbery equation is used to describe the spectral wavelengths of chemical elements. The equation is made up of different components, which include n1 and n2. The n1 of the equation has a value of 1 while the n2 runs from 2 to infinity; this makes the spectral lines to converge at point 91.2 nm.
4 0
4 years ago
60g of vinegar was used in a chemical reaction with baking soda. The total mass of the products is 140g. what was the mass of th
lesya [120]
140-60=80g
The answer is B
3 0
3 years ago
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An atom of lithium 7 has an equal number of
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Electrons and protons because they are essentially always the same
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