3 years ago

What scientists do that is the basis for their investigation?

Chemistry

1 answer:

navik [9.2K]3 years ago

4 0

Create a hypothesis, design an experiment the list varies really

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Use the table to determine the number of protons for each atom. Then, choose the statement below that is true about the two atom

Lilit [14]

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The elements are Lithium and Beryllium— just look at the mass number on the periodic table

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2 years ago

Where does radioactivity come from?

Aleks04 [339]

Radioactivity comes from unstable atoms of certain elements. Radioactivity consists of alpha radiation (2 protons and 2 neutrons), beta radiation (1 electron), or gamma radiation (Electromagnetic photons).

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3 years ago

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In an oven, 7000 kg of limestone are heated to over 900ºC to give lime and carbon dioxide. Assuming all calcium carbonate reacts

kirill [66]

Answer:

3920kg of lime(CaO) 1568m^3 of CO2

Explanation:

I attached the explanation!

also for calculating the volume I assumed Standard Temperature and Pressure(STP).

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2 years ago

Let this be an easy 5 points for your brainly account all is ask for in return is a "thank you"

Svet_ta [14]

Answer:

The number of neutrons present in one atom of isotope of Silicon of mass 28 amu is<u> 14 neutrons</u>

Explanation:

Symbol of Si isotope

$_{14}^{28}\textrm{Si}$

<u>Number of Neutron = Mass number - Atomic Number</u>

Mass number = Total number of protons and neutrons present in the nucleus of the atom.For Si = 28 amu

Atomic Number = Total number of Protons present in the nucleus.

Si = 14

Number of neutron = 24 - 14

= 14

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3 years ago

What exacerbates the heat waves?

KIM [24]

Answer:

A heatwave occurs when a system of high atmospheric pressure moves into an area and lasts two or more days.

Explanation:

In such a high-pressure system, air from upper levels of our atmosphere is pulled toward the ground, where it becomes compressed and increases in temperature.

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2 years ago