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bekas [8.4K]
3 years ago
6

Quais são os nomes dos planetas anões

Chemistry
1 answer:
irakobra [83]3 years ago
6 0

Answer:

Can you translate it on English so we can understand

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Help me please :3 :3 :3 ;3
GarryVolchara [31]
B because, it just that one yellow bulb that will operate. only the white bulb will make them all operate.
6 0
3 years ago
Read 2 more answers
What are the coefficients to balance the following equation?<br><br> ba+br2=babr2
kaheart [24]

Answer:

Its already balanced

Explanation:

Ba (barium) starts with and ends with 1. Br (bromine) starts with 2 and ends with 2.

6 0
3 years ago
Read 2 more answers
Monel metal is a corrosion-resistant copper-nickel alloy used in the electronics industry. A particular alloy with a density of
klemol [59]
<span>To find the volume of the plate without accounting for the hole firstly
V = (15.0 cm)(12.5 cm)(0.250 cm) = 46.875 cm^3
and the volume of the hole is
(pi)(1.25 cm)^2(0.250 cm) = 1.2272 cm^3
we will subtract the volume of the hole from the rest 45.648 cm^3
the multiply this by the density of the alloy to find the mass
(8.80 g/cm^3)(45.648 cm^3) = 401.701 g.
0.044% of this is Si, so (0.00044)(401.701 g) = 0.17675 g is silicon.
by the number of atoms and using average atomic mass of silicon and Avogadro's number to find the number of silicon atoms:
(0.17675 g)(1 mol/28.0855 g)(6.022E23 atoms/1 mol) =3.794E21atoms of Si
3.10% of these are Si-30:(0.0310)(3.794E18 atoms)=1.176E20 atoms of Si-30 and with two significant figures, 1.2E20 atoms.
hope this helps
</span>
4 0
3 years ago
What is the empirical formula of a compound consisting of 29.6% oxygen and 70.4% fluorine by mass?
Rainbow [258]
O1Fl2

1. Assume an 100g sample, so the percentage will stay the same

2. Covert each element into their molar mass
29.6/16.00=1.8 mols of O
70.4/19.00=3.7 mols of Fl

3. Divide both by the smallest value of mol
1.8/1.8=1 O
3.7/1.8=2 Fl

4. Write the empirical formula:
O1Fl2
3 0
3 years ago
Read 2 more answers
What determines the transition between different states of matter?
Scrat [10]

Answer:

Phase transition is when a substance changes from a solid, liquid, or gas state to a different state. Every element and substance can transition from one phase to another at a specific combination of temperature and pressure.

Explanation:

4 0
2 years ago
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