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3 years ago

Describe the physical and chemical weathering

Chemistry

2 answers:

Stella [2.4K]3 years ago

7 0

Answer:

Physical weathering is caused by purely mechanical changes to the rock, while chemical weathering is caused by chemical reactions.

Explanation:

Chemical weathering happens when the chemicals get diluted and dissolved in water and seep and percolate down the rock surfaces.

Physical weathering happens when rocks are fragmented into minor fragments while ensuring no alterations in their chemical makeup. The main causes behind physical weathering include spontaneous fluctuations in temperature like too high or too low heat or cold

BlackZzzverrR [31]3 years ago

6 0

Answer:

Explanation:

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Why doesn't all soil look and feel the same? List 3 reasons

Katen [24]

Answer:

all soil are also different due to how they were form

3 0

3 years ago

A 10.0 mL sample of HNO3 was exactly neutralized by 13.5 mL of 1.0 M KOH. What is the molarity of the HNO3? Use the titrations f

Kruka [31]

Answer: Thus molarity of $HNO_3$ is 1.35 M

Explanation:

To calculate the volume of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is $HNO_3$

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is KOH.

We are given:

$n_1=1\\M_1=?M\\V_1=10.0mL\\n_2=1\\M_2=1.0M\\V_2=13.5mL$

Putting values in above equation, we get:

$1\times M_1\times 10.0=1\times 1.0\times 13.5\\\\M_1=1.35M$

Thus molarity of $HNO_3$ is 1.35 M

7 0

3 years ago

How can we calculate empirical formula

Serggg [28]

Explanation:

TO calculate emperical formula , we need percentage composition of the elements and molecular mass of a specific compound which is already given in the question

then create a table with 1.name of element, 2.percentage given and its atomic mass , 3.no. of moles

( %given/at.mass of element) ... then take the least value in the no. of moles you have found now and divide with each no. of moles value .. to get a simple digit number.

You have got the empirical formula

7 0

3 years ago

If we have 1.23 mol of NaOH in solution and 0.85 mol of Cl2 gas is available to react, which one is the limiting reactant? Give

Vinil7 [7]

Answer:

NaOH is the limiting reactant.

Explanation:

Hello there!

In this case, since the reaction taking place between sodium hydroxide and chlorine has is:

$NaOH+Cl_2\rightarrow NaCl+NaClO+H_2O$

Which must be balanced according to the law of conservation of mass:

$2NaOH+Cl_2\rightarrow NaCl+NaClO+H_2O$

Whereas there is a 2:1 mole ratio of NaOH to Cl2, which means that the moles of the former that are consumed by 0.85 moles of the latter are:

$n_{NaOH}=0.85molCl_2*\frac{2molNaOH}{1molCl_2}\\\\n_{ NaOH}=1.7molNaOH$

Therefore, since we just have 1.23 moles out of 1.70 moles of NaOH, we infer this is the limiting reactant.

Regards!

3 0

3 years ago

The table above shows the speed of sound through different materials. About how far can sound travel in air in 2.38 s if the air

kozerog [31]

(4) 615 m

Explanation:

From the table we see that the speed of sound in air at 20 °C is 343 m/s. Knowing this we devise the following reasoning:

if the sound travel through the air 343 meters in 1 second

then the sound travel through the air X meters in 2.38 seconds

X = (2.38 × 343) / 1 = 816.35 meters

Learn more about:

speed of sound

brainly.com/question/2279936

#learnwithBrainly

8 0

3 years ago

Describe the physical and chemical weathering​

Describe the physical and chemical weathering