All categories

3 years ago

50 Points

Chemistry

2 answers:

Vesnalui [34]3 years ago

8 0

Answer:

C, Si, Ge, Sn

Explanation:

yawa3891 [41]3 years ago

3 0

Answer:

si,ge,sn

Explanation:

i looked at a periodic table

You might be interested in

PLEASE HELP ASAP PLEASE

USPshnik [31]

Answer:

If it served you, give me 5 stars please, thank you!

m = 25  Kg

8 0

3 years ago

Please!!!!!!!!!!!!!!!!!!!!!!!

maria [59]

Answer:

yesir

Explanation:

yesir yesir yesssirrrr

3 0

3 years ago

What is the molar mass of 12?

andrew-mc [135]

Answer:

I assume your talking about carbon when you say 12 so it'd be 12 grams if you are

Explanation:

The molar mass of any substance in grams per mole is numerically equal to the mass of that substance expressed in atomic mass units.

Hope this helps you some

3 0

3 years ago

When liquid silver nitrate and liquid sodium chloride are combined it becomes

Maru [420]

Answer:

solid silver chloride forms along with a new liquid, sodium nitrate

Explanation:

6 0

3 years ago

Arizona was the site of a 400,000-acre wildfire in June 2002. How much carbon dioxide (CO2) was produced into the atmosphere by

kodGreya [7K]

Answer:

2.97 × 10¹³ g

Explanation:

First, we have to calculate the biomass the is burned. We can establish the following relations:

2.47 acre = 10,000 m²
10 kg of C occupy an area of 1 m²
50% of the biomass is burned

The biomass burned in the site of 400,000 acre is:

$400,000acre\times\frac{10,000m^{2} }{2.47acre} \times \frac{10kgC}{m^{2} } \times 50\% = 8.10 \times 10^{9} kgC$

Let's consider the combustion of carbon.

C(s) + O₂(g) ⇒ CO₂(g)

We can establish the following relations:

The molar mass of C is 12.01 g/mol
1 mole of C produces 1 mole of CO₂
The molar mass of CO₂ is 44.01 g/mol

The mass of produced is CO₂:

$8.10 \times 10^{12}gC \times \frac{1molC}{12.01gC} \times \frac{1molCO_{2}}{1molC} \times \frac{44.01gCO_{2}}{1molCO_{2}} =2.97 \times 10^{13} gCO_{2}$

4 0

3 years ago