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3 years ago

Which of the compounds in the table below is listed in the wrong colum?

Chemistry

1 answer:

Sveta_85 [38]3 years ago

5 0

Answer: C

Explanation: This is because of a nice thing called guessing

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How do the products of chemical reactions compare to their reactants?

LUCKY_DIMON [66]

Answer: The products usually weigh more than the reactants.

Explanation:

8 0

3 years ago

Read 2 more answers

A solid piece of lead has a mass of 23.94g and a volume of 2.10cm^3. from these data, calculate the density of lead in si units

jeyben [28]

A density of a substance is constant. It is an extensive property, meaning it does not depend on the amount of substance because it is a ratio of mass to volume. No matter how much of each there is, they would always have a fixed ratio called density. For lead, the density is

Density = mass/volume
Density = 23.94 g/ 2.10 cm³
Density = 11.4 g/cm³

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

Can you tell me the answers, top from bottom please?

sineoko [7]

I downloaded the picture and labelled it and attached it here. Also the answers I have from top to bottom are:
- Beaker
- Mixture (Suspension; filtration is only usually an effective method of
separation if the mixture is a liquid-solid suspension)
-Filter Funnel
-Filter Paper
-Residue
-Conical Flask
-Filtrate

If you need annotations let me know

3 0

3 years ago

What kind of mixture is a solution? Name the different constituents of a solution

dlinn [17]

Answer:

homogeneous mixture

Explanation:

two or more substances

a component that dissolves and a solvent

7 0

3 years ago