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adoni [48]
3 years ago
5

Write the correct ionic compound formula

Chemistry
1 answer:
ANTONII [103]3 years ago
5 0
Ga3S2 Ga2S3 you flip both number because the don cancel out and your final Final answer is Ga2S2 And how you find the subscrips is by their charge
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The atomic mass of beryllium (Be) is 9.01 amu. The atomic mass of calcium (Ca), which is in the same group as beryllium, is 40.0
bekas [8.4K]
Mg will have a higher amu than Be but a lower amu than Ca.
8 0
3 years ago
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The characteristic flame test colors of metal ions are due to atomic emission spectra. Duscuss the relationship between the abso
vesna_86 [32]

The characteristics flame test color of metal ions are because of the atomic emission spectra.  

When an atom absorbs a particular wavelength radiation, the electrons within it, move from lower energy level to the higher level of energy. Such a procedure is called absorption. When this stimulated electron to come back to its ground state, it loses energy in particular color on the basis of the frequency of the absorbed radiation. Such a procedure is called emission.  

As an atom exhibit, distinct levels of energy, the level close to the nucleus possess less energy in comparison to the level, which is far from the nucleus. So, electrons move from lower energy level to the higher level by attaining particular energy, and after excitation, it comes back from high energy level to a low energy level with the emission of light.  

According to Planck's concept, there is a specific difference of energy between the two energy level, so such energy difference is quantized. Only those radiation are absorbed, which are equivalent to the difference of energy between the two levels.  


8 0
3 years ago
A car travels 66 kilometers in 3 hours. what is its speed
Ne4ueva [31]

Answer:

22 kph

Explanation:

You simply divide the distance and the time. 66/3 = 22.

8 0
3 years ago
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Which of these is true about the mantle?
yanalaym [24]

Answer:

c.

Explanation:

it moves in slow convection currents, hope this helps!

6 0
3 years ago
Carbon dioxide (CO2) is the gas that is mainly responsible for global warming (the greenhouse effect). The burning of fossil fue
Nesterboy [21]

Answer:

1.7\cdot 10^{15} g

Explanation:

Glucose reacts with oxygen do produce carbon dioxide and water:

C_6H_12O_6 (s) + 6 O_2 (g)\rightarrow 6 CO_2 (g) + 6 H_2O (l)

Given a daily mass of glucose:

m_1 = 5.0\cdot 10^2 g

Find moles of glucose:

n_1 = {5.0\cdot 10^2 g}{180.156 g/mol} = 2.775 mol

From stoichiometry of this equation, moles of carbon dioxide can be found by multiplying this amount by 6:

n_2 = 2.775 mol\cdot 6=16.65 mol

Convert this into mass using the molar mass of carbon dioxide:

m_2 = 16.65 mol\cdot 44.01 g/mol = 732.8 g

This is the mass of carbon dioxide per person per day. Multiply by the population and by the number of days to get the total mass:

732.8 \frac{g}{person\cdot day}\cdot 365 days\cdot 6.5\cdot 10^9 people = 1.7\cdot 10^{15} g

5 0
2 years ago
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