2 years ago

What dose the atomic number of an element represent

Chemistry

1 answer:

lianna [129]2 years ago

8 0

Answer:

No. of electrons of the element

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Identify the control group the experimental group the independent variable and the dependent variable

denis-greek [22]

Control group: 50 dogs continuing their normal diet
Experiments group: 50 dogs chosen to eat the new food
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Dependent variable: the dogs’ weight

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3 years ago

If the density of a liquid 102g/cm^3, how many milligrams will be in 63 mL of that liquid?

Ede4ka [16]

Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question

63 mL = 63 cm³

We have

mass = 102 × 63 = 6426

But 1 g = 1000 mg

6426 g = 6426000 mg

We have the final answer as

Hope this helps you

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2 years ago

In which step of a four-stroke engine cycle does the car release CO2, H2O, and CO?

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Answer:

$\boxed{\text{exhaust stroke}}$

Explanation:

The four strokes are

Intake: The mixture of air and fuel enters the cylinder.
Compression: The mixture is compressed by a factor of about 11.
Ignition: A spark ignites the fuel, which burns and produces CO₂, CO, and H₂O.
Exhaust: The combustion products are expelled from the cylinder.

$\text{The cylinder releases CO$_{2}$, CO, and H$_{2}$O during the }\boxed{\textbf{exhaust stroke}}$

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3 years ago

Which element has 47 protons?

Naya [18.7K]

Answer:

silver

Explanation:

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2 years ago

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What would happen if there were no neutrons in an atom?

AnnyKZ [126]

The mass of the atom would change. With no atoms being there then the mass would possibly change. With no neutrons then the mass of the atom will decrease

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3 years ago