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AnnyKZ [126]
3 years ago
11

At which part of a river would you have the best luck growing food?

Chemistry
2 answers:
kirza4 [7]3 years ago
8 0

Answer:

B

Explanation:

krek1111 [17]3 years ago
3 0

Answer:

B. Delta

Explanation:

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Iron(II) sulfide has a molar mass of 87.91 g/mol. 50 grams of
dimaraw [331]

Answer:

true

Explanation:

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Bond polarity of Si and H
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Si 1.90

H 2.20

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2 years ago
In tne equation below identify the bronsted lowry acid bronsted lowry base conjugate acid conjugate base
Ad libitum [116K]

Answer:

  • <em>Brønsted-Lowry acid: HNO₂</em>
  • <em>Brønsted-Lowry base: NH₃</em>
  • <em>Conjugate acid: NH₄⁺</em>
  • <em>Conjugate base: NO₂⁻</em>

Explanation:

The equation is:

                 HNO_2(aq)+NH_3(aq)\rightarrow NH4^+(aq)  + NO2^-(aq)

<em>Brønsted-Lowry acids</em>  are H⁺ donors.

<em>Brønsted-Lowry bases</em> are H⁺ acceptors.

Thus, on the left side, <em>HNO₂</em> is the acid and <em>NH₃ </em>is the base.

The <em>conjugate acids</em> and <em>conjugate bases</em> are on the right side of the equation.

The <em>conjugate acid</em> is the spieces that is formed after a base accepts the proton; thus it is <em>NH₄⁺</em>. A <em>conjugate acid</em> contains one more H atom and one more + charge than the base that formed it.

The <em>conjugate base</em> is the species that is formed after the acid donates its proton; thus, <em>NO₂⁻</em> is the <em>conjugate base</em>. A <em>conjugate base</em> contains one less H atom and one more - charge than the acid that formed it.

Summarizing:

  • Brønsted-Lowry acid: HNO₂
  • Brønsted-Lowry base: NH₃
  • Conjugate acid: NH₄⁺
  • Conjugate base: NO₂⁻

6 0
3 years ago
Water is intitally present in a state where its molecules are far apart. During a change of state it’s molecule slow down which
Tresset [83]
Molecules will move faster and spread apart on warmer temperatures The colder it get the slower the molecules move so naturally those water molecules are on the path to freezing
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3 years ago
1. A 4.0-g sample of glass was heated from 274K to 314 K. a temperature increase of 40 K, and was
Margarita [4]

Answer:

See below

Explanation:

Q = m c T      c = specific heat   T = temp change  Q = heat joules

32 = 4 c 40   <u>   c = .2 J/g-C</u>

314 to 344 k is a change of 30 K  

Q = m c T

  = 4 * .2 * 30 = <u>24 Joules </u>

6 0
1 year ago
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