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EleoNora [17]
4 years ago
7

True or false? the formula of a compound that expresses the smallest whole-number ratio of the atoms present is called the empir

ical formula.
Chemistry
1 answer:
galben [10]4 years ago
8 0
The answer is : True
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If the average velocity of an object is not the same for all time intervals, then the object moves at a(n)
Elina [12.6K]

Answer:

A

Explanation:

because the object's velocity had no acceleration between time intervals

3 0
4 years ago
What is the name of the molecule that is used to heat most of our buildings?<br><br> (Chemistry)
mario62 [17]

Answer:

Fluids (air/water) either as water vapour or oxygen and carbon dioxide.

Explanation:

Heat transfer occurs through conduction, convection or radiation.

Many aties, this involves fluids whose molecules have been activated by heated by heat, moving from hotter to cooler regions, allowing for heating or cooling of the rooms.

Building materials have varying conductivity.

7 0
3 years ago
Calculate the molar concentration of the Cl⁻ ions in 0.92 M MnCl2(aq).
scZoUnD [109]
MnCl2(aq) is an ionic compound which will have the releasing of 2 Cl⁻ ions ions in water for every molecule of MnCl2 that dissolves.
MnCl2(s) --> Mn+(aq) + 2 Cl⁻(aq)
            [Cl⁻] = 0.92 mol MnCl2/1L × 2 mol Cl⁻ / 1 mol MnCl2 = 1.8 M
The answer to this question is [Cl⁻] = 1.8 M
4 0
3 years ago
A population of Esherichia coli is given time to grow for eight generations. The final population is 1,996,800 cells. What was t
hram777 [196]

Answer:

7800 cells

Explanation:

The number of Escherichia coli cells N after n generations is given by

N = 2ⁿ × N₀ where N₀ = initial population

Now making N₀ subject of the formula, we have

N₀ = N/2ⁿ

Since n = 8 and N = 1,996,800 cells, substituting the values of the variables into the equation, we have

N₀ = N/2ⁿ

N₀ = 1,996,800 cells/2⁸

N₀ = 1,996,800 cells/256

N₀ = 7800 cells

So, the initial population of Escherichia coli cells is 7800 cells.

7 0
3 years ago
Why does a pendulum need chemical energy
Mama L [17]
To move it needs a form of energy and in this case its chemical
6 0
4 years ago
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