2 years ago

What is a genetic mutation

Chemistry

1 answer:

salantis [7]2 years ago

5 0

Answer:

a mutation is a change in a DNA sequence

Explanation:

mutations can result from DNA copying mistakes made during cell division

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Why doesn't glue stick to the inside of the bottle? (Not sure if this is chemistry or not lol)

Leni [432]

Answer:

When white glue is in the bottle, there's not enough air inside the bottle to cause the water to evaporate to make the glue sticky. Basically, the bottle holds the glue from the air and keeps the glue from going everywhere.

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3 years ago

How is electrolysis most commonly used to produce an energy source?

elena-s [515]

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Substances which will glow in the dark after being exposed to sunlight are called:

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A 275 g sample of a metal requires 10.75 kJ to change its temperature from 21.2 oC to its melting temperature, 327.5 oC. What is

Vlada [557]

Answer:

$c=0.127\ J/g^{\circ} C$

Explanation:

Given that,

Mass of the sample, m = 275 g

It required 10.75 kJ of heat to change its temperature from 21.2 °C to its melting temperature, 327.5 °C.

We need to find the specific heat of the metal. The heat required by a metal sample is given by :

$Q=mc\Delta T$

c is specific heat of the metal

$c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{10.75\times 10^3\ J}{275\times (327.5 -21.2)}\\\\=0.127\ J/g^{\circ} C$

So, the specific heat of metal is $0.127\ J/g^{\circ} C$ .

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3 years ago

What would you call the following chemical reaction, Zn(s) + H2O(g) – Zno (s) + H2(g)

egoroff_w [7]

I'd say it's single replacement/displacement

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3 years ago