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3 years ago

Help me get this right no links

Chemistry

1 answer:

ira [324]3 years ago

6 0

Answer:

the rise and fall is the tides.

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A jeweler is making sapphire rings using 2 sapphires on every 1 ring. If the jeweler has 12 sapphires and 10 rings, what is the

user100 [1]

Answer: The theoretical yield is 6 rings.

Explanation:

Theoretical yield is predicted or estimated value.

Jeweler used 2 sapphires for 1 ring

Then for each sapphire there will be = $\frac{1}{2}$ rings are used

For 12 sapphire = $\frac{1}{2}\times 12=6 rings$ will be used

Out of 10 rings 6 rings with 2 sapphires will be made.

The theoretical yield is 6 rings.

7 0

3 years ago

Read 2 more answers

Write the electron configuration for Br- and state the number of valence electrons. Select one:

Aleks04 [339]

Answer:

$1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^62} 4s^{2} 3d^{10} 4p^{5}$ with 7 valence electrons.

Explanation:

Bromine has 7 unpaired (valence) electrons in its outer shell, and a total of 35 elecrons. Its 4s orbital is completely filled with 2 electrons.

The closest answer from the options would be option D.

I hope this helps.

3 0

3 years ago

Which solution turns litmus paper blue A.acidic B.basic C.neutral D.none

Wittaler [7]

Question: Which solution turns litmus paper blue

Answer: basic

Explanation:compound dissolves in water which cause the solution to become alkaline

question answered by

(jacemorris04)

8 0

3 years ago

Read 2 more answers

What are the characteristics of a plasma

Lyrx [107]

A plasma is a hot ionized gas consisting of approximately equal numbers of positively charged ions and negatively charged electrons. The characteristics of plasmas are significantly different from those of ordinary neutral gases so that plasmas are considered a distinct "fourth state of matter

4 0

4 years ago

Read 2 more answers

One way to determine the pH of a solution is to measure the concentration of the acid and base forms of the indicator colorimetr

ki77a [65]

Answer:

pH = 4.26

Explanation:

Bromocresol green is a commonly used pH indicator. The concentration ratio of the acid form to base form explains its color, which reflects the pH of the medium.

C₂₁H₁₄Br₄O₅S + H₂O ⇄ C₂₁H₁₃Br₄O₅S⁻ + H₃O⁺

acid conjugate base

We can calculate the pH through Henderson-Hasselbalch's equation:

$pH=pKa+log(\frac{[base]}{[acid]} )=4.66+log(\frac{1}{2.49} )=4.26$

7 0

3 years ago