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V125BC [204]
3 years ago
7

A student wants to investigate abiotic factors that affect tomato plants.

Chemistry
1 answer:
Julli [10]3 years ago
3 0
Since abiotic is a non living factor B would be the answer because water is abiotic
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Which of the following techniques is most appropriate for the recovery of solid KNO3 from an aqueous solution of KNO3?
Oxana [17]

Answer: option E. Evaporation to dryness

Explanation:

3 0
3 years ago
How many grams of molybdenum(Mo) are in 2.68E24 atoms of Mo?
loris [4]
<h3>Answer:</h3>

427 g Mo

<h3>General Formulas and Concepts:</h3>

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Reading a Periodic Table
  • Using Dimensional Analysis
  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right
<h3>Explanation:</h3>

<u>Step 1: Define</u>

2.68E24 atoms Mo or 2.68 × 10²⁴ atoms Mo

<u>Step 2: Identify Conversions</u>

Avogadro's Number

Molar Mass of Mo - 95.94 g/mol

<u>Step 3: Convert</u>

<u />2.68 \cdot 10^{24} \ atoms \ Mo(\frac{1 \ mol \ Mo}{6.022 \cdot 10^{23} \ atoms \ Mo} )(\frac{95.94 \ g \ Mo}{1 \ mol \  Mo} ) = 426.966 g Mo

<u>Step 4: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules and round.</em>

426.966 g Mo ≈ 427 g Mo

3 0
3 years ago
Where does the year go in a bar graph
Pani-rosa [81]
The x axis. This is because the numbers go on the side so the years have to go on the bottem
7 0
3 years ago
The reduction of nitrogen monoxide is described by the following chemical equation: 2H2 (g) +2NO (g) 2H20 ()N2 (g Suppose a two-
Ipatiy [6.2K]

Answer:

Reasonable Second step- N_{2}O(g)+H_{2}(g)\rightarrow N_{2}(g)+H_{2}O(g)

Explanation:

The given single step chemical reaction is as follows.

2H_{2}(g)+2NO \rightarrow 2H_{2}O(g)+N_{2}(g)

Suppose a two-step mechanism is proposed for this reaction,

The reaction occured in two steps they are as follows.

Step -1:H_{2}(g)+2NO \rightarrow N_{2}O(g)+H_{2}O(g)

Step-2:N_{2}O(g)+H_{2}(g)\rightarrow N_{2}(g)+H_{2}O(g)

8 0
3 years ago
Describe the location of a proton within an atom. Compare the mass of a proton in regard to other subatomic
const2013 [10]

Explanation:

Protons are the positively charged particles found in an atom.

  • A proton is found within the nucleus of an atom.
  • Together with the neutron, they make up the nuclear region of an atom.

Protons and neutrons constitutes the bulk mass of the atom.

 The mass of a proton is 1.67 x 10⁻²⁷kg

The proton have the same mass as neutrons.

Compared to electrons, it is 1840 times the mass of an electron.

3 0
3 years ago
Read 2 more answers
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