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Degger [83]
3 years ago
7

3. Does entropy increase or decrease in the following processes?

Chemistry
1 answer:
tamaranim1 [39]3 years ago
5 0

Answer:

HOPE IT helps much as you can

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Which model of the atom is considered to be most accurate?
postnew [5]
The correct answer is B)wave mechanical. Hope that helps! If you have any questions about the answer i gave you please let me know!
7 0
3 years ago
Read 2 more answers
A certain protein was found to contain 0.292% manganese by mass. Determine the minimum molecular mass of the protein.
Lisa [10]
55u \ \ \ \ \ \ \Rightarrow \ \ \ \ \ 0,292\%\\
x \ \ \ \ \ \ \ \ \ \Rightarrow \ \ \ \ \ 100\%\\\\
x = \frac{55u*100\%}{0,292\%}\approx18835,62u
4 0
3 years ago
What is the empirical formula for a compound whose molecular formula is P4O10
Bas_tet [7]

Answer:

The empirical formula is P2O5 (option B)

Explanation:

An empirical formula does not necessarily represent the actual numbers of atoms present in a molecule of a compound; it represents only the ratio between those numbers.

The actual numbers of atoms of each element that occur in the smallest freely existing unit or molecule of the compound is expressed by the molecular formula of the compound.

The molecular formula of a compound may be the empirical formula, or it may be a multiple of the empirical formula.

If the molecular formula is P4O10, this means for each for P-atoms we have 10-O atoms this is a ratio 4:10 or 1: 2.5

To find the empirical formula we divide the molecular formula by 2 what will give us P2O5

For each 2 P atoms we have 5 O-atoms. This is a ratio 1: 2.5

This is the simpliest form for the compound P4O10.

The empirical formula is P2O5 (option B)

6 0
3 years ago
Convert 32.56 km/hr into ft/hr
Gekata [30.6K]
Note that
1 m = 3.2808 ft

Therefore
1 km = 3280.8 ft
and
32.56 \,  \frac{km}{h} = (32.56 \,  \frac{km}{h})*(3280.8 \,  \frac{ft}{km}) =  1.0682 \, \times 10^{5} \, \frac{ft}{h}

Answer: 1.0682 x 10⁵ ft/hr

8 0
3 years ago
For the mineral torbernite, Cu(UO2)2(PO4)2⋅8H2O, determine the total number of atoms in one formula unit
ASHA 777 [7]

Answer:

2.47x10^{25}atoms

Explanation:

Hello,

In this case, since the mineral torbernite has one copper atom, two uranium atoms, twenty oxygen atoms (2x2+4x2+8), two phosphorous atoms and sixteen hydrogen atoms (12x2) and therefore forty one in total, by using the Avogadro's number one is able to compute the total number of atoms in one formula unit or one mole:

Atoms=1molCu(UO_2)_2(PO_4)_2\dot \ 8H_2O*\frac{41mol\ of \ atoms}{1molCu(UO_2)_2(PO_4)_2\dot \ 8H_2O}*\frac{6.022x10^{23}atoms}{1mol\ of \ atoms}  \\\\=2.47x10^{25}atoms

Best regards.

6 0
3 years ago
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