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Gennadij [26K]
4 years ago
8

Which of the following statements best predicts the pH value of H2CO3 and KOH?

Chemistry
1 answer:
worty [1.4K]4 years ago
4 0

Answer:

The 2nd one

Explanation:

ITS THE RIGHT ANSWER

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Lucille is finding it difficult to play soccer after school. Her doctor thinks that her cells might not be getting enough oxygen
Natali5045456 [20]

Answer:

They might not be bringing in enough oxygen from the air. It's hard to play soccer if you don't have enough oxygen in your cells. They might not be breaking down starch to make glucose.

Explanation:

6 0
3 years ago
Are these answers correct? I’m a little unsure
Naily [24]

Answer:

yes I think that they are correct

8 0
3 years ago
A 32.5 g iron rod, initially at 22.4 ∘C, is submerged into an unknown mass of water at 63.0 ∘C, in an insulated container. The f
Allisa [31]

Answer:

The mass of water m_{w} = 39.18 gm

Explanation:

Mass of iron m_{iron} = 32.5 gm

Initial temperature of iron T_{1} = 22.4°c = 295.4 K

Specific heat of iron  C_{iron} = 0.448 \frac{KJ}{kg K}

Mass of water = m_{w}

Specific heat of water  C_{w} = 4.2 \frac{KJ}{kg  K}

Initial temperature of water T_{2} = 336 K  

Final temperature after equilibrium T_{f} = 59.7°c = 332.7 K

When iron rod is submerged into water then

Heat lost by water  = Heat gain by iron rod

m_{w} C_{w} (T_{2} - T_{f} ) =  m_{iron} C_{iron} ( T_{f} - T_{1} )

Put all the values in above formula we get

m_{w} × 4.2 × ( 336 - 332.7 ) = 32.5 × 0.448 × ( 332.7 - 295.4 )

m_{w} = 39.18 gm

Therefore the mass of water m_{w} = 39.18 gm

8 0
3 years ago
Here is my question only answer if you understand this question​
sasho [114]
1- false
2- true
3- true
4- false
5- true
6- false
7- true
8- true
9- true
10- false

Hope it helps :)
8 0
3 years ago
Group 17 elements (for example, chlorine) in the periodic table are known as
BaLLatris [955]

Explanation:

The answer is halogens

Halogens are reactive non metallic elements that form strongly acidic compounds with Hydrogen to form simple salts

4 0
3 years ago
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