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elena-s [515]
2 years ago
11

Alkaline Earth Metals chemical properties on the periodic table

Chemistry
1 answer:
Tom [10]2 years ago
4 0

Answer:

shiny

silvery-white

somewhat reactive metals at standard temperature and pressure

readily lose their two outermost electrons to form cations with a 2+ charge

low densities

low melting points

low boiling points

Explanation:

You might be interested in
Which element has the highest thermal conductivity
Vera_Pavlovna [14]

Answer:

Diamond.

Explanation:

Having thermal conductivity of more than 2,000 WMK

WMK = Watts per Meter per Kelvin

3 0
3 years ago
How much energy is required to raise the temperature of 10.7 grams of gaseous helium from 22.1 °C to 39.4 °C ?
Rainbow [258]

Answer:

Q = 2640.96 J

Explanation:

Given data:

Mass of He gas = 10.7 g

Initial temperature = 22.1°C

Final temperature = 39.4°C

Heat absorbed = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree. Specific heat capacity of He is 14.267 J/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 39.4°C - 22.1°C

ΔT = 17.3°C

Q = 10.7 g× 14.267 J/g.°C ×  17.3°C

Q = 2640.96 J

5 0
3 years ago
What did the periodic table help scientists discover?
Natalija [7]

Answer:

A_________________________

4 0
3 years ago
Read 2 more answers
How many ions are in Li + Cl
Amanda [17]

It contains 5 ions.

Hope that helped!!

6 0
3 years ago
In a particular titration experiment a 30.0 ml sample of an unknown hcl solution required 25.0 ml of 0.200 m naoh for the end po
Nikitich [7]
The balanced equation for the acid base reaction is as follows
NaOH + HCl ---> NaCl + H₂O
stoichiometry of NaOH to HCl is 1:1
the number of NaOH moles reacted - 0.200 mol/L x 0.0250 L = 0.005 mol
according to molar ratio
number of NaOH moles reacted = number of HCl moles reacted 
therefore number of HCl moles - 0.005 mol 
volume of 30.0  mL contains 0.005 mol
therefore 1000 mL contains - 0.005 mol / 0.030 L = 0.167 M
concentration of HCl is 0.167 M
5 0
3 years ago
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