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3 years ago

Compared To 620 nm photon, a 760 nm photon has ?

Chemistry

1 answer:

Kitty [74]3 years ago

6 0

140 more nm's ? lol jk don't say that

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Which of the following is a chemical property? A. Boiling point B. Electrical conductivity C. Flammability D. Malleability

Scrat [10]

Answer:

I say its C flammability

Explanation:

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3 years ago

Cream from milk can be separated by<br>process ......................................

pshichka [43]

Answer:

centrifugation

Explanation:

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4 years ago

HELP ASAP! GIVING BRAINLIEST!!<br><br> How could you give a pendulum more energy?

Virty [35]

Answer:

Explanation:

In a simple pendulum with no friction, mechanical energy is conserved. Total mechanical energy is a combination of kinetic energy and gravitational potential energy. As the pendulum swings back and forth, there is a constant exchange between kinetic energy and gravitational potential energy

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3 years ago

A weather balloon is filled with helium that occupies a volume of 3.93 104 L at 0.995 atm and 32.0°C. After it is released, it r

user100 [1]

Answer: Thus the volume of the balloon at that new location is $4.65\times 10^4L$

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1$ = initial pressure of gas = 0.995 atm

$P_2$ = final pressure of gas = 0.720 atm

$V_1$ = initial volume of gas = $3.93\times 10^4L$

$V_2$ = final volume of gas = ?

$T_1$ = initial temperature of gas = $32.0^oC=273+32.0=305.0K$

$T_2$ = final temperature of gas = $-11.7^oC=273-11.7=261.3K$

Now put all the given values in the above equation, we get:

$\frac{0.995\times 3.93\times 10^4}{305.0}=\frac{0.720\times V_2}{261.3}$

$V_2=4.65\times 10^4L$

Thus the volume of the balloon at that new location is $4.65\times 10^4L$

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3 years ago

Gaseous ammonia chemically reacts with oxygen o2 gas to produce nitrogen monoxide gas and water vapor. Calculate the moles of ni

Sergio [31]

Answer: 0.050 moles of nitrogen monoxide are produced by 0.050 moles of ammonia.

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced chemical reaction is:

$4NH_3(g)+5O_2(g)\rightarrow 4NO(g)+5H_2O(g)$

According to stoichiometry:

4 moles of ammonia produce = 4 moles of nitrogen monoxide

Thus 0.050 moles of ammonia produce = $\frac{4}{4}\times 0.050=0.050$ moles of nitrogen monoxide

7 0

3 years ago