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ohaa [14]
3 years ago
5

ABC is a triangle.

Advanced Placement (AP)
1 answer:
bulgar [2K]3 years ago
7 0

Answer:

A=25

C=105

B= 50

Explanation:

A+B+C= 180

75+ C = 180

C= 180_75 = 105

A+105 = 130

A= 130 -105=25

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A state is considering opening an area of old-growth forest on state land to logging. Officials debate the best way to log the f
Citrus2011 [14]

Answer:

Clearcutting can enhance biodiversity by uniform growth of all plants which would be grown in some pattern

Explanation:

Clearcutting is a techniques applied in the logging industry in which the trees in a cutting area are removed down at one go.

Although cutting down trees is a highly controversial practice, but its one purpose is also the rehabilitation of forest by growing new trees, in a uniform manner and all tree would have same lengths, would get better approach to sunlight for better yield

Also this method has been observed as financially more viable in terms of investment in logging industry

3 0
3 years ago
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Concentrated nitric acid has a molarity of 15.9 M and a density of 1.42 g/mL. Calculate the following concentrations using 1.00
MrMuchimi

Answer: a) percent by mass = 70.5\%

b) molality = 38.01mol/kg

c) mole fraction = 0.40

Explanation:

Given molarity = 15.9 M

moles of HNO_3 = 15.9 moles in 1.00 L of solution

mass of HNO_3 = moles\times {\text {Molar mass}}=15.9mol\times 63g/mol=1001.7g

Density of solution of = 1.42 g/ml

Volume of solution = 1.00 L = 1000 ml

Mass of solution = Density\times volume= 1.42g/ml\times 1000ml=1420g

mass of solvent = mass of solution - mass of solute = (1420-1001.7) g = 418.3 g = 0.4183 kg

moles of solvent = \frac{\text {given mass}}{\text {Molar mass}}=\frac{418.3g}{18g/mol}=23.2mol

percent by mass =\frac{\text {mass of nitric acid}}{\text {mass of solution}}\times 100=\frac{1001.2}{1420}\times 100=70.5\%

molality = \frac{\text {no of moles of solute}}{\text {mass of solvent in kg}}=\frac{15.9mol}{0.4183kg}=38.01mol/kg

mole fraction = \frac{\text {moles of solute}}{\text {total moles}}=\frac{15.9}{15.9+23.2}=0.40

7 0
3 years ago
Why were the caves at Lascaux closed
alukav5142 [94]
To preserve the art.
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ladessa [460]

Answer:

गंध की लकीर सी' से क्या अभिप्राय है गंध की रेखा

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3 years ago
Why would it make sense for a geographically large country to use a federal form of government?​
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Large countries devolve power to subnational units in order to.
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