3 years ago

Indicate the pH value as pH < 7, pH = 7 or PH > 7 for each of the following substances.

Chemistry

1 answer:

Galina-37 [17]3 years ago

5 0

Explanation:

a) PH>7

b)PH=7

c)PH>7

d) PH>7

You might be interested in

The function of this organelle is to create energy (ATP) through the process of cellular respiration.

dedylja [7]

Answer:

Explanation:

I hope this is correct and have a great day

3 0

2 years ago

Read 2 more answers

Howtocalculatethevolumeofcarbondioxideproducedwhen400gofmarblewereats.t.p<br>

lys-0071 [83]

Answer:

so 0.15 moles X 22.4 dm3/mole=3.36 dm3. Next we find the moles of hexane combusted, and then the moles of CO2. Finally, we find the volume of CO2 using the fact that at STP, 1 mole of gas = 22.4 dm3.

3 0

3 years ago

Suppose that a certain biologically important reaction is quite slow at physiological temperature (37 oC) in the absence of a ca

Oksi-84 [34.3K]

Answer:

30 kJ

Explanation:

Arrhenius equation is given by:

$k=Aexp(-Ea/RT)\\$

Here, k is rate constant, A is Pre-exponential factor, Ea is activation energy and T is temperature.

taking natural log of both side

ln k = ln A - Ea/RT

In Arrhenius equation, A, R and T are constant.

Therefore,

$ln\frac{k_2}{k_1} =\frac{Ea_1-Ea_2}{RT}$

$Ea_1-Ea_2$ is the lowering in activation energy by enzyme,

R = 8.314 J/mol.K

T = 37°C + 273.15 = 310 K

$\frac{k_2}{k_1} =1\times 10^5$

$ln 1\times 10^5 =\frac{Ea_1-Ea_2}{RT}\\{Ea_1-Ea_2} = 11.512 \times 8.314 \times 310\\=29670\ J\\=30\ kJ$

4 0

3 years ago

The Surface of Earth is changing slowly<br> over time.A.False<br> B.true<br> Previous

oksian1 [2.3K]

Answer:

true

Explanation:

7 0

3 years ago

Jupiter’s moon Io was discovered to have high concentrations of sulfur oxides in its atmosphere. This, in combination with resea

deff fn [24]

Answer:

S₂O₂

Explanation:

The multiplying prefix di- means "two."

Thus, a molecule of disulfur dioxide has two atoms of sulfur and two atoms of oxygen.

The formula is S₂O₂.

4 0

2 years ago