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miv72 [106K]
3 years ago
5

Sam wants to conduct an investigation of the velocity of a golf ball when hit off of the tee using the scientific method. Review

the procedural steps that Sam plans to follow during his investigation.
Collect data from a sample of ten golf balls hit off of the same tee by the same golfer.

Hypothesize that the golf ball will reach a velocity of 5 feet per second each time the ball is hit from the tee by the same golfer.

Observe the golf ball as it is hit off of the tee.

Analyze data using a table of data and graph of the data.

Communicate results based on the sample data collected.



Which of the following options represents the order of Sam’s procedural steps according to the scientific method?

Sam should plan to hypothesize about the velocity of the golf ball, observe the golf ball, collect data from a sample of golf balls, communicate the results based on collected data, and analyze the data.

Sam’s plan of procedural steps is correct.

Sam should plan to observe the golf ball, hypothesize about the velocity of the golf ball, collect data from a sample of golf balls, analyze the data, and communicate the results based on collected data.

Sam should plan to observe the golf ball, collect data from a sample of golf balls, analyze the data, hypothesize the golf ball’s velocity, and communicate the results based on collected data.
Chemistry
2 answers:
Morgarella [4.7K]3 years ago
8 0
Sam is correct is correct
Nookie1986 [14]3 years ago
3 0

Answer:

Sam’s plan of procedural steps is correct.

Explanation:

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Answer:

Noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og).

Explanation:

I pretty much covered it in my answer!

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8 0
3 years ago
one reaction that produces hydrogen gas can be represented by the unbalanced chemical equation Mg(s)+HCI(aq) -> MgCI(aq)+H2(g
Sonbull [250]
<h3>Answer:</h3>

128 g HCl

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

<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<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Reading a Periodic Table

<u>Stoichiometry</u>

  • Reaction Mole Ratios
  • Using Dimensional Analysis
<h3>Explanation:</h3>

<u>Step 1: Define</u>

[RxN - Unbalanced] Mg (s) + HCl (aq) → MgCl (aq) + H₂ (g)

↓

[RxN - Balanced] 2Mg (s) + 2HCl (aq) → 2MgCl (aq) + H₂ (g)

[Given] 3.25 mol Mg

[Solve] x g HCl

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

[RxN] 2 mol Mg → 2 mol HCl

[PT] Molar Mass of H - 1.01 g/mol

[PT] Molar Mass of Cl - 35.45 g/mol

Molar Mass of HCl - 1.01 + 35.45 = 36.46 g/mol

<u>Step 3: Stoich</u>

  1. [S - DA] Set up:                                                                                                 \displaystyle 3.25 \ mol \ Mg(\frac{2 \ mol \ HCl}{2 \ mol \ Mg})(\frac{36.46 \ g \ HCl}{1 \ mol \ HCl})
  2. [S - DA] Multiply/Divide [Cancel out units]:                                                    \displaystyle 127.61 \ g \ HCl

<u>Step 4: Check</u>

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

127.61 g HCl ≈ 128 g HCl

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2 years ago
The chemical process in which electrons are gained by an atom or an ion is called
Harman [31]
Reduction is the process by which eletrons are gained by an atom. 
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A chemist reported that 100 gallons of a gas were available in a laboratory. Which property of the gas did the chemist report?
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It would be volume

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6 0
3 years ago
Read 2 more answers
CaBr + KOH – Ca(OH), + KBr (balance first) What mass, in grams, of
neonofarm [45]

Answer:

129.73 g of CaBr₂

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

CaBr₂ + 2KOH –> Ca(OH)₂ + 2KBr

Next, we shall determine the mass of CaBr₂ that reacted and the mass of Ca(OH)₂ produced from the balanced equation. This can be obtained as follow:

Molar mass of CaBr₂ = 40 + (80×2)

= 40 + 160

= 200 g/mol

Mass of CaBr₂ from the balanced equation = 1 × 200 = 200 g

Molar mass of Ca(OH)₂ = 40 + 2(16 + 1)

= 40 + 2(17)

= 40 + 34

= 74 g/mol

Mass of Ca(OH)₂ from the balanced equation = 1 × 74 = 74 g

SUMMARY :

From the balanced equation above,

200 g of CaBr₂ reacted to produce 74 g of Ca(OH)₂.

Finally, we shall determine the mass of CaBr₂ that react when 48 g of Ca(OH)₂ were produced. This can be obtained as follow:

From the balanced equation above,

200 g of CaBr₂ reacted to produce 74 g of Ca(OH)₂.

Therefore, Xg of CaBr₂ will react to produce 48 g of Ca(OH)₂ i.e

Xg of CaBr₂ = (200 × 48)/74

Xg of CaBr₂ = 129.73 g

Thus, 129.73 g of CaBr₂ were consumed.

6 0
3 years ago
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