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3 years ago

How does nano frabic work

Chemistry

1 answer:

Tanzania [10]3 years ago

6 0

Answer:

Nano silver is woven into fabric to give it anti-bacterial properties.

Explanation:

Helps by fending off the bacteria that make those clothes smell after you sweat. Nano-titanium dioxide adds sun protection to clothing just as it does in sunscreen. The use of nanoparticles to achieve fresh-smelling clothes and UV protection may not be safe.

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Which element is classified as an alkali metal?

Delvig [45]

Answer: The alkali metals consist of the chemical elements lithium (Li), sodium (Na), potassium (K),[note 1] rubidium (Rb), caesium (Cs),[note 2] and francium (Fr).

Explanation:

8 0

4 years ago

What is Haber's process? Write it with chemical reaction.

Lana71 [14]

Answer: Habers process is the industrial process used for the production of ammonia

$N_2(g)+3H_2(g)\rightarrow 2NH_3(g)$

Explanation:

Habers process is the industrial process used for the production of ammonia. It uses hydrogen from natural gas and nitrogen mainly from atmosphere under extremely high pressures (150-200atm) and moderately high temperatures $(400-450^0C)$ .

The catalyst used in Habers process is iron.

The balanced chemical reaction is:

$N_2(g)+3H_2(g)\rightarrow 2NH_3(g)$

7 0

3 years ago

Chlorinated hydrocarbon pesticides, such as DDT, were introduced during World War II to control insects in agricultural crops. A

faltersainse [42]

Except:they are safe for all organisms except insect pest

7 0

4 years ago

How much energy, in joules, is released when 17 kilograms of granite is cooled from 45 C to 21 C?

Lostsunrise [7]

Answer is: D. 327,992.8 J.
m(granite) = 17 kg = 17000g.
ΔT(granite) = 21°C - 45°C = -24°C (-24K).
cp(granite) = 0,804 J/g·°C, specific heat capacity of granite.
Q = m(granite) · ΔT(granite) · cp(granite).
Q = 17000 g ·(-24°C)· 0,804 J/g·K.
Q = -327990 J.
The granite lost 327990 joules of energy.
Q - amount of energy gained or lost.

8 0

3 years ago

Read 2 more answers

How many moles of nitrogen gas are present in a 28.9 dm3 temperature of 55.0 °C and a pressure of 144 kPa?

jeka57 [31]

Given :

Temperature, T = 55° C = ( 55 + 273 ) K = 328 K .

Volume of container, V = 28.9 dm³ = 0.0289 m³ .

Pressure, P = 144 kPa = 144000 Pa .

To Find :

Number of moles of nitrogen gas.

Solution :

We know, by ideal gas equation :

PV = nRT ( R ( universal gas constant ) = 8.31 J K⁻¹ mol⁻¹ .

$n = \dfrac{PV}{RT}\\\\n = \dfrac{144000\times 0.0289}{8.31 \times 328} \ moles\\\\n = \dfrac{4161.6}{2725.68}\\\\n = 1.53 \ moles$

Therefore, number of moles of nitrogen gas is 1.53 moles.

8 0

3 years ago