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Mars2501 [29]
3 years ago
8

Which acide will have more strengthout of two acids of pHvalue 2and 5 why​

Chemistry
1 answer:
gladu [14]3 years ago
5 0

Ph 2 will ahve more strength due to the fact that its more acidic compared to pH 5.

the lower the number of a pH, the more it is heading towards being acidic, but the higher the number, the more it heads towards being an alkali. here is a ppt i made along time ago. hope it can help you . have a nice day

Download pptx
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Why is digestion a necessary process for animals
Akimi4 [234]
Answer: 
Digestion is a vital process for survival in animals.

Basic Explanation:
-Digestion occurs when food or liquid is consumed, allowing the nutrients, vitamins, and even atoms to be absorbed in the body of an animal, human, or plant (some plants, not all). The nutrients are used for almost everything in a body for the organism to function. The wastes or rest of the digested product then takes exit (when you $#[email protected] out of you're hole) and is left in multiple areas, but usually ends up cycling through all organisms again for another round of digestion.

Hope this Helps, at least a little!
4 0
4 years ago
Which of the following is an example of a chemical change?
adoni [48]

Answer:

a rock's appearance changing over time due to exposure to acid rain

6 0
2 years ago
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Photons of infrared radiation are responsible for much of the warmth we feel when holding our hands before a fire. These photons
KIM [24]

Answer:

8.3\cdot 10^{22} photons

Explanation:

The energy of a photon is given by

E_1 = \frac{hc}{\lambda}

where

h=6.63\cdot 10^{-34} Js is the Planck constant

c=3.0\cdot 10^8 m/s is the speed of light

\lambda is the photon wavelength

Here we have

\lambda=1.5\cdot 10^{-6} m

So, the energy of 1 of these infrared photons is

E_1=\frac{(6.63\cdot 10^{-34})(3\cdot 10^8)}{1.5\cdot 10^{-6}}=1.32\cdot 10^{-19} J

The amount of energy needed to increase the temperature of the cup of water is:

E=mC\Delta T

where

m = 175 g is the mass

C=4.186 J/gC is the specific heat capacity

\Delta T=40-25=15^{\circ}C is the increase in temperature

So,

E=(175)(4.186)(15)=10,988 J

Therefore, the number of photons needed is:

n=\frac{E}{E_1}=\frac{10,988}{1.32\cdot 10^{-19}}=8.3\cdot 10^{22}

5 0
3 years ago
Which of the following elements have seven valance electrons in its outer shell?
lina2011 [118]

Answer:

Flourine

Explanation:

Its at the 17 group number which are where the halogens are located.

8 0
3 years ago
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Which of the following is a chemical property of liquid water?
kakasveta [241]

Answer:

B) it reacts with sodium metal to form sodium hydroxide and hydrogen gas

Explanation:

B is the only option that show a chemical property, density, freezing, and boiling points are physical properties.

7 0
3 years ago
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