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3 years ago

When electricity is passed through a common salt solution. Sodium hydroxide is

Chemistry

1 answer:

jolli1 [7]3 years ago

8 0

Answer:

a)oxygen and chlorine

b) H20+NaCl= NaOH + O+ Cl

c) Cl2+ Ca(OH)2=CaOCl2+CaCl2 +HCL

Explanation:

electricity splits up the molecules for water and hydrogen displaces chlorine because its is more reactive.

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Classify matter as elements mixtures and compounds

Goryan [66]

Answer:

An element contains just one type of atom. A compound contains two or more different atoms joined together. A mixture contains two or more different substances that are only physically joined together, not chemically. A mixture can contain both elements and compounds.

5 0

3 years ago

C. 0.0023 moles of CO2

Naily [24]

Answer:

0.1gram

Explanation:

mass = no of moles × molar mass

6 0

3 years ago

Measurement of heat conductivity A metal panel of area A = 100 cm² and thickness Y = 0.5 cm was found to conduct heat at a rate

RSB [31]

Answer:

The average thermal conductivity of the material at this temperature range is 3*10^(-9) W/mK.

Explanation:

The heat flow through this area of the metal panel can be expressed as:

$q/A=-k\frac{(T_2-T_1)}{Y}$

being A the surface area, k the thermal conductivity, T2 and T1 the temperatures in each side and Y the thickness of the metal panel.

We have to rearrange the equation to clear k:

$k=\frac{-(q/A)*Y}{\Delta T} = \frac{-(3 W/100 cm2)*0.5cm}{5 ^\circ K}*(\frac{1m}{100cm} )^{3} \\\\k=\frac{0.015}{5*100^{3} }W/mK= 3*10^{-9}W/mK$

The average thermal conductivity of the material at this temperature range is 3*10^(-9) W/mK.

7 0

3 years ago

What units do chemists normally use for density of liquids, solids and gas? Explain the

Tanzania [10]

Answer:

We can define density as per unit volume. The SI unit to measure the density of solid, liquid and gas is kilogram per cubic metre (kg/m3) and in the centimeter–gram–second system of units (cgs unit) is gram per cubic centimeter (g/cm3).

Explanation:

3 0

3 years ago

Which type of chemical bond requires the least amount of energy to break?

OLga [1]

Answer:

B) Double

Explanation:

8 0

4 years ago