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MrRissso [65]
3 years ago
11

Which two industries account for 10% of the methane generated by human activities in the U.S.?

Chemistry
2 answers:
Sphinxa [80]3 years ago
8 0

Answer:

Dairy farms and livestock operations

Explanation:

jasenka [17]3 years ago
3 0

Answer:

dairy farms

The two industries that account for 10% of the methane generated by human activities in the United States are dairy farms and livestock operations.

Explanation:

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Chrysanthenone is an unsaturated ketone. If Chrysanthenone has M+ = 150 and contains 2 double bond(s) and 2 ring(s); what is its
snow_lady [41]

Answer:

the Molecular formula will be; C10H14O

Explanation:

Given the data in the question;

Chrysanthenone is an unsaturated ketone,

it has M+ = 150 and contains 2 double bond(s) and 2 ring(s).

molecular formula = ?

we know that ketone contain 1 oxygen and mass of oxygen is 16

so mass of the C and H remaining will be;

⇒ 150 - 16 = 134

Now we determine the number of C atoms;

⇒ 134 / 13 = 10

hydrocarbon with 10 hydrogen atom have CnH2n+2 means

⇒ ( 10 × 2 ) +2 = 22 hydrogens

But then we have 3 unsaturation meaning 6 hydrogens less and also we have ring meaning 2 more hydrogens

⇒ 22 - 6 - 2 = 14

Hence the Molecular formula will be; C10H14O

4 0
3 years ago
What is the molecular formula for chloroform? none of these choices CH3C CHCI3 CH2C12 CCI4
dangina [55]

Answer:

CHCI₃

Explanation:

Chloroform, IUPAC name, trichloromethane, is organic compound with the molecular  formula CHCl₃. It is colorless and sweet-smelling liquid having high density which is produced on a large scale precursor of PTFE , and for various refrigerants .

Chloroform , is a powerful euphoriant , anxiolytic , anesthetic and sedative when inhaled or ingested .

4 0
3 years ago
A gas is contained in a thick-walled balloon. When the pressure change from 100 kPa to 90.0 kPa, the volume changes from 2.50 L
Orlov [11]
The  temperature  change is   calculated using the  combined  gas law
that  is P1V1/T1  =P2V2/T2
P1=  100KPa
P2=90kpa
v1= 2.50 L
v2= 3.75 L
T1= 303 K
T2=?

T2  is  therefore  =  P2V2T1/P1V1
=( 90  x 3.75  x303)/  (100  x2.50) =  409.05  K
3 0
3 years ago
Read 2 more answers
Sodium hydroxide reacts with sulfuric acid according to the equation:
Lelechka [254]

Answer:

27) Double replacement

28) 2NaOH + H2SO4 --> Na2SO4 + 2H2O

6 0
3 years ago
Ferrophosphorus (Fe2P) reacts with pyrite (FeS2) producing iron(II) sulfide and a compound that is 27.87% P and 72.13% S by mass
k0ka [10]

Answer:

The molecular formula of the compound = P_4S_{10}

The empirical formula of the compound = P_2S_{5}

The balanced chemical equation for this reaction:

4Fe_2P+18FeS_2\rightarrow 26FeS+P_4S_{10}

Explanation:

Compound that is 27.87% P and 72.13% S by mass and has a molar mass of 444.56 g/mol.

Molar mass of compound = 444.56 g/mol

Number of phosphorus atom = x

Number of sulfur atom = y

Atomic  mass of phosphorus  31 g/mol

Atomic mass of sulfur = 32 g/mol

Percentage of element in compound :

=\frac{\text{number of atoms}\times text{Atomic mass}}{\text{molar mas of compound}}\times 100

Phosphorus :

27.87\%=\frac{x\times 31 g/mol}{444.56 g/mol}\times 100

x = 4

Sulfur :

72.13\%=\frac{y\times 32 g/mol}{444.56 g/mol}\times 100

y = 10

The molecular formula of the compound = P_4S_{10}

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

The empirical formula of the compound = P_2S_{5}

The balanced chemical equation for this reaction:

4Fe_2P+18FeS_2\rightarrow 26FeS+P_4S_{10}

8 0
4 years ago
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