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2 years ago

What is a common event due to transform plate movement at the San Andreas Fault Zone?

Chemistry

2 answers:

Genrish500 [490]2 years ago

8 0

Answer:

Earthquakes

Explanation:

took the test

AVprozaik [17]2 years ago

8 0

Answer:

Earthquakes

Hope this helps:3

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The potential difference across the terminals of a battery of e.m.f. 12 V and internal resistance 2 ohm drops to 10 V when it is

lesantik [10]

Explanation:

The given data is as follows.

E.m.f = 12 V, Voltage = 10 V, Resistance = 2 ohm

Hence, calculate the current as follows.

I = $\frac{E - V_{t}}{r_{int}}$

Putting the given values into the above formula as follows.

I = $\frac{E - V_{t}}{r_{int}}$

= $\frac{12 - 10}{2}$

= 1 A

Atomic weight of copper is 63.54 g/mol. Therefore, equivalent weight of copper is $\frac{M}{2}$ .

That is, $\frac{M}{2}$

= $\frac{63.54 g/mol}{2}$

Hence, electrochemical equivalent of copper is as follows.

Z = (\frac{E}{96500}) g/C

= (\frac{63.54 g/mol}{2 \times 96500}) g/C

= $3.29 \times 10^{-4}$ g/C

Therefore, charge delivered from the battery in half-hour is calculated as follows.

It = Q

= $1 \times \frac{1}{2} \times 60 times 60$

= 1800 C

So, copper deposited at the cathode in half-an-hour is as follows.

M = ZQ

= $3.29 \times 10^{-4} g/C \times 1800 C$

= 0.5927 g

Thus, we can conclude that 0.5927 g of copper is deposited at the cathode in half an hour.

8 0

2 years ago

2NH3 → N2 + 3H2 If 2.22 moles of ammonia (NH3) decomposes according to the reaction shown, how many moles of hydrogen (H2) are f

Rashid [163]

Answer:

Explanation:

According to the mole ratio, using 2NH3 will give you 3H2. Which means in order to find the moles of H2 you would only need to divide 2 and multiply 3 to get the amount of moles of H2 produced.

7 0

2 years ago

What is the conversion of 160g to cg??

Umnica [9.8K]

16000
is the answer
because I used the calculater

3 0

2 years ago

Given the unbalanced reaction: P₄+ O₂ <img src="https://tex.z-dn.net/?f=%5Crightarrow" id="TexFormula1" title="\rightarrow" alt=

alex41 [277]

Answer:

The correct answer is option e.

Explanation:

$P_4+ 5O_2 \rightarrow P_4O_{10}$

Moles of phosphorus pent-oxide :

$\frac{14.2 g}{284 g/mol}=0.05 mol$

According to reaction, 1 mole of phosphorus pent-oxide is obtained from 5 moles of oxygen gas.

Then 0.05 mole of phosphorus pent-oxide will be obtained from:

$\frac{5}{1}\times 0.05 mol=0.25 mol$

Hence,the correct answer is option e.

6 0

2 years ago

Ill give brainliest :D how many grams of kcl are produced from 11.5 grams?

eduard

Answer:

approximately 15.1 grams.

Explanation:

The key to chemistry is to change everything to moles. Then when you have the answer in moles change the answer back to grams, liters, or whatever you want.

change 25 grams of potassium chlorate to moles.

calculate the gram molecular mass of potassium chlorate.

Chlorate is Cl with 3 oxygens. ate = saturated. Chlorine has seven valance electrons when it is saturated six of these electrons are used by oxygen ( 2 electrons per oxygen) leaving only 1 electron.

1 K x 39 grams/mole

+1 Cl x 35.4 grams/ mole

+3 O x 16 grams/ mole

= 122.4 grams / mole Potassium Chlorate

122.4

= moles.

2.05 moles of Potassium Chlorate.

There is a 1:1 mole ratio. 1 mole of Potassium Chlorate will produce 1 mole of Potassium Chloride.

2.05 moles of Potassium Chlorate will produce 2.05 moles of Potassium Chloride.

Find the gram molecular mass of Potassium Chloride.

1 K x 39 = 39

+1 Cl x 35.4 = 35.4

= 74.4 grams / mole.

2.05 moles x 74.4 grams/ mole = 15.2 grams

4 0

2 years ago

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