Answer:
The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
Explanation:
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Explanation:
can u post a picture of the question ?
Answer is:
Less than the vapor pressure of pure water
Answer:
4510 J
Explanation:
To calculate the energy of the water, you need to use the following equation:
Q = mcΔT
In this equation,
-----> Q = energy/heat (J)
-----> m = mass (g)
-----> c = specific heat capacity (J/g°C)
-----> ΔT = change in temperature (°C)
First, you need to determine the mass of the water. To do this, you need to multiply the given volume by the density of water (1.00 g/mL).
100.0 mL H₂O 1.00 g
------------------------ x ------------ = 100.0 g H₂O
1 mL
Now, you can plug the given values into the equation and solve for "Q" (Q = ). The final answer should have 3 significant figures to match the given values with the lowest number of sig figs.
Q = ? J c = 4.18 J/g°C
m = 100.0 g ΔT = 32.0 °C - 21.2 °C = 10.8 °C
Q = mcΔT
Q = (100.0 g)(4.18 J/g°C)(10.8 °C)
Q = 4510 J
Explanation:
1) A balanced equation for the reaction.
2) The name of the soluble slat produced by reaction between magnesium and hydrochloric acid is magnesium chloride.
Magnesium chloride =
3)Yes, chemical change has been taking.
This is because rearrangement of atom is taking place which resulted in formation of hydrogen gas amd magnesium chloride.
4) Moles of hydrogen gas produced = 2 mole
According to reaction, 1 mole of hydrogen gas is obtained from 2 moles of HCl.
Then 2 moles of hydrogen gas will be obtained form:
of HCl
4 moles of acid has reacted.