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snow_tiger [21]

2 years ago

12

3. If a gas has a pressure of 32.1 psi at a temperature of 25°C, then what is the new pressure if the temperature is increased t

o 75°C?

1 answer:

mihalych1998 [28]2 years ago

6 0

Answer:

baho kag bilat sige ka ug palubut

Explanation:

sige ka ug eyut

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If an atom has 18 protons, 15 neutrons, and 22 electrons, what is the atom's electrical charge?

PSYCHO15rus [73]

Charge = number of proton - number of electron = 18-22 = -4

SO, OPTION A IS YOUR ANSWER........

3 0

3 years ago

You have to make 500 mL of a 1.50 M BaCl2. You have 2.0 M barium chloride solution available. Determine how to make the needed d

Inga [223]

Answer:

You need 375 mL of BaCl2 solution.

Explanation:

M1V1=M2V2

Dilution formula. Substitute known values and solve for V1.

M1 = 2.0 M

M2 = 1.50 M

V2 = 500 mL

(2.0 M)(V1) = (1.50 M)(500 mL)

V1 = (1.50 M)(500 mL) / (2.0 M)

V1 = 375 mL

7 0

2 years ago

Help please !!!

Firdavs [7]

Answer:2

Explanation:

This way they will balance.

3 0

2 years ago

As a technician in a large pharmaceutical research firm, you need to produce 300. mL of 1.00 M a phosphate buffer solution of pH

tamaranim1 [39]

Answer: pH = 7.36. The pKa of H2PO4− is 7.21.

Explanation:

4 0

3 years ago

A reaction between substances Y and Z is

Anuta_ua [19.1K]

Answer : The value of activation energy for this reaction is 108.318 kJ/mol

Explanation :

The Arrhenius equation is written as:

$K=A\times e^{\frac{-Ea}{RT}}$

Taking logarithm on both the sides, we get:

$\ln k=-\frac{Ea}{RT}+\ln A$ ............(1)

where,

k = rate constant = $2.95\times 10^{-3}L/mol.s$

Ea = activation energy = ?

T = temperature = 435 K

R = gas constant = 8.314 J/K.mole

A = pre-exponential factor = $3.00\times 10^{+10}L/mol.s$

Now we have to calculate the value of rate constant by putting the given values in equation 1, we get:

$\ln (2.95\times 10^{-3}L/mol.s)=-\frac{Ea}{8.314J/K.mol\times 435K}+\ln (3.00\times 10^{10}L/mol.s)$

$Ea=108318.365J/mol=108.318kJ/mol$

Therefore, the value of activation energy for this reaction is 108.318 kJ/mol

3 0

2 years ago