3 years ago

Across 1. the alkali metal in Period 4

Chemistry

1 answer:

lana [24]3 years ago

3 0

The answer ispotassium (K)

You might be interested in

The thermometer in the picture reads, "19.9 degrees Celsius".

GalinKa [24]

Answer:

Sorry but i can't help

Explanation:

i need to really finesh s

6 0

2 years ago

What causes the shielding effect to remain constant across a period?

Ivanshal [37]

Electrons are added to the same principal energy level.

5 0

3 years ago

12.A piece of magnesium is in the shape of a cylinder with a height of 5.62 cm

yaroslaw [1]

Answer:

Density, d = 1.779 g/cm³

Explanation:

The density of a material is given by its mass per unit volume.

Here, height of a piece of magnesium cylinder, h = 5.62 cm

Its diameter, d = 1.34 cm

Radius = 0.67 cm

Volume of he cylinder,

$V=\pi r^2 h\\\\\text{Putting the value of r and h, we get :}\\\\V=(\pi \times (0.67)^2\times 5.62)\ cm^3$

$d=\dfrac{m}{V}\\\\d=\dfrac{14.1\ g}{(\pi \times (0.67)^2\times 5.62)\ cm^3}\\\\d=1.779\ g/cm^3$

So, the density of the sample is 1.779 g/cm³.

4 0

2 years ago

CH3-CHCl-CH2-CH2-CH2CHCl-CH3 +concentrated KCN

Phantasy [73]

Is this chemistry or something else?

8 0

3 years ago

Read 2 more answers

What's the difference between mass and weight?

eduard

Answer: mass- how much stuff" is in an object

Weight- there is a gravitational interaction between objects

Explanation:

5 0

3 years ago

Read 2 more answers