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OverLord2011 [107]
2 years ago
14

Match the following terms:

Chemistry
1 answer:
AURORKA [14]2 years ago
3 0

Answer:

See below ~

Explanation:

<u>A to B</u>

⇒ Solid Phase

==========================================================

<u>B to C</u>

⇒ Melting

==========================================================

<u>C to D</u>

⇒ Liquid Phase

==========================================================

<u>D to E</u>

⇒ Vaporizing

============================================================

<u>E to F and beyond</u>

⇒ Gas Phase

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GaryK [48]

Answer:

same number of protons as electrons

Explanation:

The addition of a neutron can make an atom radioactive. When you change the number of protons in an atom, you will change the atom from one element to a different element. ... If you change the number of electrons in an atom, you will get an ion of the element.

7 0
3 years ago
HELP!! Suppose that the pressure of 1.00 L of gas is 380 mm Hg when the temperature is 200. K. At what
Korolek [52]
Numa máquina térmica uma parte da energia térmica fornecida ao sistema(Q1) é transformada em trabalho mecânico (τ) e o restante (Q2) é dissipado, perdido para o ambiente.



sendo:

τ: trabalho realizado (J) [Joule]
Q1: energia fornecida (J)
Q2: energia dissipada (J)


temos: τ = Q1 - Q2

O rendimento (η) é a razão do trabalho realizado pela energia fornecida:

η= τ/Q1

Exercícior resolvido:
Uma máquina térmica cíclica recebe 5000 J de calor de uma fonte quente e realiza trabalho de 3500 J. Calcule o rendimento dessa máquina térmica.

solução:

τ=3500 J
Q1=5000J

η= τ/Q1
η= 3500/5000
η= 0,7 ou seja 70%

Energia dissipada será:



τ = Q1 - Q2
Q2 = Q1- τ

Q2=5000-3500
Q2= 1500 J

Exercicio: Qual seria o rendimento se a máquina do exercicio anterior realizasse 4000J de trabalho com a mesma quantidade de calor fornecida ? Quanta energia seria dissipada agora?



obs: Entregar foto da resolução ou o cálculo passo a passo na mensagem
4 0
3 years ago
A sample of hydrogen gas has a pressure of 1.50 atm with a volume of 5.00 L, what is the pressure if the volume is expanded to 7
miss Akunina [59]

Answer:

The pressure is 0,97 atm

Explanation:

We apply Boyle Mariotte's Law, where for a certain mass of gas, at constant temperature, the pressure and volume vary inversely proportionally:            P1x V1 = P2 x V2 P2= (P1 x V1)/V2

P2 = 1, 50 atm x 5, 00 L /7,74 L

P2= 0, 97 atm

6 0
3 years ago
When Thomas Edison first sold electricity, he used zinc coulometers to measure charge consumption. (In a coulometer the cathode
IrinaK [193]

Answer:

The answer is "42537.93 \ C".

Explanation:

Molar mass : Z_n = 65.38 \ \frac{g}{mol}\\\\

\to Zn^{2+} + 2e^{-} = Zn\\\\

\therefore\\\\ \to 65.38 \ g \ of\  Z_n  \ require: \\\\ \to 2 \times 96500\  C\\\\\to 14.41 \ g\  require,\\\\ \to \frac{(14.41 \times 2 \times 96500)}{65.38} \ \frac{g}{mol} = 42537.93 \ C

5 0
3 years ago
Which of the following has the largest molecular weight? Question 2 options: NO2 N2O CO2 H2S
Marizza181 [45]

Answer:

NO2

I got it right

6 0
2 years ago
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