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Oksi-84 [34.3K]
2 years ago
9

ANSWER PLS!!!!!!!!!!!

Chemistry
1 answer:
nata0808 [166]2 years ago
5 0

Answer:

This is the reverse of a synthesis reaction. Replacement reactions occur when elements switch places in compounds. In a single replacement reaction, one element takes the place of another in a single compound. In a double replacement reaction, two compounds exchange elements

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45.0 g of Ca(NO3)2 are used to create a 1.3 M solution. What is the volume of the solution
Stells [14]
As we know that Molarity is given as,

                                       M = moles / V 
Solving for V,
                                        V = moles / M ------------------(1)
Also, moles is equal to,
                                       moles = mass / M. mass -------------(2)
puting value of moles from eq. 2 into eq. 1,
                                       V = (mass / M.mass) / M
Putting values,
                                       V = (45 g / 164 g/mol) / 1.3 mol/dm³

                                       V = 0.21 dm³ 
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How deep below Earth's surface do rocks melt?
liraira [26]

The answer is D. 50 km

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Can you think of another way the Egyptians might have tried to reduce friction to move the heavy blocks?
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How many molecules of HCl would react with 1 mole of Mg0?<br> Mg0 +2HCI<br> MgCl, + H,0
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12.044 ×10²³ molecules of HCl

Explanation:

Given data:

Number of moles of MgO = 1 mol

Number of molecules of HCl react = ?

Solution:

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Number of molecules of HCl react:

1 mole contain 6.022×10²³ molecules

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12.044 ×10²³ molecules

5 0
2 years ago
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