2 years ago

Which of the following is true about science? (10 points)

Chemistry

1 answer:

Sedaia [141]2 years ago

7 0

Economic concerns is the correct one

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Which statement is true about SO4 2− ?

Nonamiya [84]

It is a poly atomic anion because it has more than one atom and a negative charge

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A gold ring with a mass of 16g was dropped in the snow and its temperature dropped from 35°C to 0°C. How much heat was released

Luda [366]

Answer:

-72.8 joules

Explanation:

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2 years ago

What is the density of an object that has a volume of 34.2 cm^3 and a mass of 19.6 g? (a) 0.573 g/cm^3 (b) 1.74 g/cm^3 (c) 670 g

KengaRu [80]

Answer: The density of the object will be $0.573g/cm^3$

Explanation:

Density is defined as the mass contained per unit volume.

$Density=\frac{mass}{Volume}$

Given : Mass of object = 19.6 grams

Volume of object= $34.2cm^3$

Putting in the values we get:

$Density=\frac{19.6g}{34.2cm^3}=0.573g/cm^3$

Thus density of the object will be $0.573g/cm^3$

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Which enzyme "unzips" DNA by breaking hydrogen bonds that hold the bases together?

KonstantinChe [14]

A- *enzyme* helicase

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Most radiation is released as particles. Identify the type radiation that is not a particle.

Blizzard [7]

Gamma rays

Explanation:

Gamma rays is a form of electromagnetic radiation. It has zero mass and no charge.

Most radiations are particles but gamma rays are not particles they are mere rays.

They have an energy range between 10KeV and 3Mev
The range of gamma rays is not definite but it is very long.
The intensity of gamma rays for any medium decreases exponentially from the source.
Gamma rays are ionizing radiations

learn more:

Irradiation brainly.com/question/10726711

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