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Viefleur [7K]
2 years ago
9

EASYYYYYYY!!!!!!!!!!!!!!

Chemistry
1 answer:
eduard2 years ago
6 0

Answer:

Agriculture was practiced for thousands of years without the use of artificial chemicals. Artificial fertilizers were first created during the mid-19th century. These new agricultural techniques, while beneficial in the short term, had an Institute of Plant Industry to improve traditional farming methods in India.

Explanation:

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Which answer best explains one of the reasons that oceans are salty?
Tatiana [17]

Answer:

(D) Water from streams and rivers carry salt to the ocean

Explanation:

Hope this helps!

8 0
3 years ago
What is the main reason that attitudes are more often revealed in spoken rather than written language?
musickatia [10]
I believe the answer is D.
6 0
3 years ago
500.0 mL of a gas is collected at 745.0 mm Hg. what what will the volume be at standard pressure
Irina-Kira [14]
This is an application of Boyle's law:
P₁V₁ = P₂V₂. we don't have to convert volume and pressure to standard forms. we can even use the pressure with mmHg
1 atm = 760 mmHg 
V₂ = P₁V₁ / P₂ = 745 x 500 / 760 = 490 ml
Note that here we assume constant temperature
6 0
3 years ago
Can someone fill this out pleaseee for me
Ganezh [65]

Filling out the table below following the outlined order:

  • Calcium - symbol = Ca; Group =2; Period = 4; Ar = 134; Am =40.078u; Ph = solid; Density = 1.55; Bp = 1757K; Mp = 1115K.
  • Vanadium - symbol = V; Group =5; Period = 4; Ar = 197; Am =50.9415u; Ph = solid; Density = 6.11; Bp = 3680K; Mp = 2183K.
  • Manganese - symbol = Mn; Group =7; Period = 4; Ar = 127; Am = 54.938044u; Ph = solid; Density = 7.21; Bp = 2334K; Mp = 1519K.
  • Cobalt: - symbol = Co; Group =9; Period = 4; Ar = 125; Am =58.933195 u; Ph = solid; Density = 8.90; Bp = 3200K; Mp = 1768K.
  • Zinc: - symbol = Zn; Group = 12; Period = 4; Ar = 134; Am =65.38 u; Ph = solid; Density = 7.14; Bp = 1180K; Mp = 692.68K.
  • Arsenic: - symbol = As; Group = 15; Period = 4; Ar = 197; Am = 74.9216 u; Ph = solid; Density = 5.75; Bp = 889K; Mp = 889K.
  • Bromine: - symbol = Br; Group =17; Period = 4; Ar = 120; Am = 79.904 u; Ph = Liquid; Density = 3.1028; Bp = 332K; Mp = 265K.

<h3>Meaning of Element</h3>

An element can be defined as a substance that can not be broken down into simpler substances.

An element serves as a building blocks for compounds and mixtures.

In conclusion, each element and its property as requested in the table are given above.

Learn more about element : brainly.com/question/18096867

#SPJ1

5 0
1 year ago
Which of the following is not a postulate of the kinetic molecular theory?
tester [92]

Explanation:

Which of the following is not a postulate of the kinetic molecular theory?

Answer is

option D. the collisions between gas molecules are elastic

<em>Hope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>you</em>

6 0
3 years ago
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