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Virty [35]
3 years ago
14

A mole of lead will be heavier than a mole of oxygen because

Chemistry
1 answer:
tatuchka [14]3 years ago
8 0
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Change these word equations into formula equations and balance them. Be sure to use the proper symbols to indicate the state of
Ket [755]

Answer:

See detailed reaction equations below

Explanation:

a) Mg(s) +2HBr(aq) ----------------> MgBr2(aq) + H2(g)

b) Ca(ClO3)2(s) ------------> CaCl2(s) + 3O2(g)

c) 3BaBr2(s) +2Na3PO4(aq) ------------> Ba3(PO4)2(s) + 6NaBr(aq)

d) 3AgNO3(aq) + AlI3(aq) --------------> 3AgI(s) + Al(NO3)3(aq)

Balancing reaction equations involves taking valencies and number of atoms of each element on the reactants and products side into consideration respectively.

3 0
3 years ago
Explain, in your own words, how energy is different from force. Use what you have learned from Newton’s Laws and the reading to
fomenos
Energy is made of everything and it can’t be created for destroyed. force is not made out of everything
4 0
3 years ago
If the first energy level can hold 2 electrons, the second holds 8, and the third can hold 8, what if the atomic number is bigge
sergejj [24]
You're wrong because the third energy level can contain 18 <span>electrons. And the 4th have up to 32 elections.

The pattern go by 2-8-18-32</span>
4 0
3 years ago
Calculate the percentage by mass of oxygen in Al2(SO4)3 (Al=27, S=32,O= 16) PLEASE SHOW FULL WORKING​
White raven [17]

Answer:

There is 61.538% oxygen in Al2(SO4)3.

Explanation:

Wt Of oxygen in the compound = 12*16 = 192 amu.

Total Wt. Of the compound = 2*12+3*32+12*16 = 312 amu.

Thus, percent of oxygen = Wt of oxygen/total Wt. Of compound *100

= 192/312 * 100=61.538 %

6 0
3 years ago
Read 2 more answers
A box has dimensions: l = 10.0 cm; w = 5.0 cm; h = 2.5 cm determined by a mm ruler. Calculate
olga55 [171]

Answer:

Volume of box =  125 cm³

Explanation:

Given:

Length l = 10 cm

Width b = 5 cm

Height h = 2.5 cm

Find:

Volume of box

Computation:

Volume of box = lbh

Volume of box = 10 x 5 x 2.5

Volume of box =  125 cm³

7 0
3 years ago
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