2 years ago

____ is a gemstone used in clocks and watches.

Chemistry

1 answer:

Murrr4er [49]2 years ago

7 0

Answer: C

Explanation:

Clocks and watches are made out of Quartz

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What are the solutions to the quadratic equation 2x2 + 10x - 48 = 0?

Natali [406]

Answer:

Explanation:

$2x^2+10x-48\\=2\left(x^2+5x-24\right)\\x^2+5x-24\\=\left(x^2-3x\right)+\left(8x-24\right)\\=x\left(x-3\right)+8\left(x-3\right)\\=\left(x-3\right)\left(x+8\right)\\=2\left(x-3\right)\left(x+8\right)\\2\left(x-3\right)\left(x+8\right)=0\\x-3=0\\x = 0+3\\x = 3\\x+8=0\\x+8-8=0-8\\x=-8\\x=3,\:x=-8$

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2 years ago

When you walk, you push against the floor, and _________.

Taya2010 [7]

When you walk, you push against the floor, and the floor pushes back against you.

Answer: B. The floor pushes back agaisnt you.

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2 years ago

Find the average atomic mass of neon, given the atomic masses and relative abundance of its three isotopes.

Lyrx [107]

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2 years ago

The pKa of the α‑carboxyl group of serine is 2.21 , and the pKa of its α‑amino group is 9.15 . Calculate the average net charge

sleet_krkn [62]

Answer:

Net charge in serine at pH equal to 8.30 is "0"

Explanation: