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Kryger [21]
3 years ago
9

What is physical weathering NOT caused by? (pls i really need help with this!!)

Chemistry
1 answer:
Anarel [89]3 years ago
3 0

Answer:

the changing tempure in rocks causing it to back apart

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How many moles of methane (CH4) are in 7.31 x 10^25 molecules
Ivan

molar mass of methane CH4

= C + 4 H  

= 12.0 + 4 x 1.008

= 12.0 +  4.032

= 16.042g/mol

7.31 x 10^25 molecules x <u>             1 mole  CH4    </u>  = 121.43 moles

                                       6.02 x 10^23 CH4 molecules

121.43 moles CH4 are present.

       


6 0
3 years ago
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What are the concentrations of sugar
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The easiest way to answer this question is to first figure out the molar mass of the sugar in question. To do this multiply the number of individual atoms for a given element by its atomic mass. 12 X 12.01 g/mol = 144.12 g/mol C. 22 X 1.008 g/mol = 22.176 g/mol H. 11 X 16.00 g/mol = 176.00 g/mol O.
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3 years ago
A chemical reaction produces formaldehyde, with a chemical formula of CH2O. Carbon is in Group 4A, oxygen is in Group 6A, and hy
ruslelena [56]

Answer:

A chemical reaction produces formaldehyde, with a chemical formula of CH2O. Carbon is in Group 4A, oxygen is in Group 6A, and hydrogen is in Group 1A on the periodic table. In one to two sentences, can you describe the bonds in a molecule of formaldehyde in terms of valence electrons?

Explanation:

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3 years ago
¿Cuál es la Molaridad y Normalidad de 230 grs de HCl disueltos en 680 ml de agua?<br> Cl: 35,5 grs
adelina 88 [10]

Answer:

English? please

Explanation:

4 0
3 years ago
In the following combustion reaction of acetylene (C2H2), how many liters of CO2 will be produced if 60 liters of O2 is used, gi
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2C₂H₂ + 5O₂ = 2H₂O + 4CO₂

V(O₂)=60 l
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V(O₂)/{5Vm}=V(CO₂)/{4Vm}

V(CO₂)=4V(O₂)/5

V(CO₂)=4*60/5=48 l

48  liters of CO₂ will be produced

5 0
3 years ago
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