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gladu [14]
3 years ago
14

Give three importance of PH in our daily life?​

Chemistry
2 answers:
german3 years ago
6 0

\bold{ANSWER}

▶To check the nature of food items.

▶To check the nature of soil .

Likurg_2 [28]3 years ago
3 0

_____________________________

Answer:

1. Living organisms and plants survive in neutral medium.

2. Plants grow or survive in neutral medium that is soil should be neutral. It is the soil is acidic, farmer uses lime as a basic to make the soil neutral and if the soil is a basic, farmer uses cow dung cakes as a acidic medium which neutralizes the soil and make soil neutral.

3. Animals survive only in neutral water, what is it rain makes the water body is acidic which causes aquatic animals die.

_____________________________

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PLEASE HELP!!!! WILL MARK BRAINLIEST!!!! A rigid steel container with a volume of 30 L is filled with oxygen to a pressure of 9.
GuDViN [60]

Answer:

12 atm

Explanation:

First, let us convert Celcius into Kelvin: 28.0 °C = 301.15 K and 129.0 °C = 402.15 K

For this question we must employ the Combined Gas Law: \frac{P_1V_1}{P_2V_2}=\frac{n_1RT_1}{n_2RT_2}, where P_1 is the initial pressure and P_2 is the new pressure.

We know that intitially, P=9 atm, V=30 L, and T=301.15K. From our problem, only temperature and pressure changes, while the number of moles, volume and the gas constant, R, stay the same, so they are irrelevant.

Thus, the filled out Combined Gas Law would be:

\frac{9 atm}{P_2}=\frac{301.15K}{402.15K}, where the volume, moles of gas, and R are cancelled out.

We can manipulate this equation to derive the new pressure. We find that

9atm≈0.74885P_2.  

This means that

P_2≈9/0.74885≈12 atm

4 0
2 years ago
I need help please please
inna [77]

Answer:

B should be the answer, and ur low-key valid lol

Explanation:

6 0
3 years ago
The combustion of 1 mole of CO according to the reaction CO(g) + ½O2(g) → CO2(g) + 67.6 kcal gives off how much heat?
Tomtit [17]
When the enthalpy value is given, we can calculate how much heat is use or produces in a given equation. 

67.6 kCal ---> 67.6 kCal= 1 mol of reaction
1 mol of reaction=  1 mol of CO (based on the coefficient)

so 1 mole of CO gives us 67.6 kCal of heat.

calculation:

1 mol CO\frac{67.5 kcal}{1 mol CO} = 67.5 kcal




5 0
3 years ago
How do you test for hydrogen?
snow_lady [41]

To test for hydrogen, burn a candle near the suspected source of hydrogen. If you hear a squeaky pop sound, hydrogen is present because when hydrogen gas burns, it makes a squeaky pop sound.

7 0
2 years ago
Read 2 more answers
Which one is correct for number 6 I can’t decide
nadezda [96]

I'm pretty sure it's D .

5 0
3 years ago
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