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Liono4ka [1.6K]
3 years ago
15

Kati was in the kitchen when she heard a crash. She went into her bedroom and found her window broken and a baseball lying on th

e ground. Kati said "this baseball broke my window.” This statement is an
A. inference because she is blaming someone else for the broken window.
B.inference because she drew a conclusion based on evidence.
C. observation because she heard the crash before she came into the room.
D. observation because she can see the evidence
Chemistry
2 answers:
dimulka [17.4K]3 years ago
8 0
B. inference because she drew a conclusion based on evidence.

Because the evidence was that she heard the crashing sound, and then when she came into her room saw the broken window and baseball.

It was not an observation because she did not directly see the baseball going through the window

Alina [70]3 years ago
8 0

Answer:

<h2>B. inference because she drew a conclusion based on evidence.</h2>

Explanation:

Inference is the thinking process where you make a conclusion using premises, this premises must always be true in order to draw a right conclusion. In this case, Kati made a conclusion based on factual evidence, which completes the inference process.

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How many sub-energy levels does the 2nd MEL have?
DedPeter [7]

Answer:

n=  | Shell            |       Maximum Number of Electrons

1    | 1st Shell      |      2

2   | 2nd Shell      |      8

3   | 3rd Shell        |      18

4   |  4th Shell        |      32

Explanation: cause :)

5 0
3 years ago
Help me pls its chemistry
saul85 [17]

B to C:-

  • The temperature remains constant from B to C in any time interval .
  • Looking at the graph there is BC || x axis.
  • Hence temperature remains unchanged.

E to D:-

  • Here also the temperature remains constant.
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8 0
3 years ago
When the glucose solution described in part A is connected to an unknown solution via a semipermeable membrane, the unknown solu
olya-2409 [2.1K]

Answer: The unknown solution had the lower concentration

Explanation: concentration will always move from higher to lower region. If the concentration of the unknown solution has increased, it therefore means that the initial concentration of the unknown solution was low

7 0
4 years ago
During science class, while studying mixtures, you mix together table salt and sand. Your teacher challenges you to separate the
olga2289 [7]
The property to be used is sieving. you get a bowl and a sieve when you pour the sand and salt,the salt being the small particle sieve to the bowl while the sand remain on the sieve as residue
7 0
3 years ago
A phosphate buffer solution (25.00 mL sample) used for a growth medium was titrated with 0.1000 M hydrochloric acid. The compone
AysviL [449]

Answer:

0,07448M of phosphate buffer

Explanation:

sodium monohydrogenphosphate (Na₂HP) and sodium dihydrogenphosphate (NaH₂P) react with HCl thus:

Na₂HP + HCl ⇄ NaH₂P + NaCl <em>(1)</em>

NaH₂P + HCl ⇄ H₃P + NaCl <em>(2)</em>

The first endpoint is due the reaction (1), When all phosphate buffer is as NaH₂P form, begins the second reaction. That means that the second endpoint is due the total concentration of phosphate that is obtained thus:

0,01862L of HCl×\frac{0,1000mol}{L}= 1,862x10⁻³moles of HCl ≡ moles of phosphate buffer.

The concentration is:

\frac{1,862x10^{-3}moles}{0,02500L} = <em>0,07448M of phosphate buffer</em>

<em></em>

I hope it helps!

7 0
3 years ago
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