3 years ago

To what category of elements does an element belong if it is a poor conductor of electricity

Chemistry

1 answer:

Yuri [45]3 years ago

3 0

I was wondering the same thing my dude

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What is the molarity of a solution that contains 9.63 grams of HCl in 1.5 liters of solution? 1 H 1.01 Hydrogen 17 Cl 35.45 Chlo

madam [21]

Hey there !

Molar mass HCl :

HCl =1.01 + 35.45 => 36.46 g/mol

Number of moles ( solute) :

n = m / mm

n = 9.63 / 36.46

n = 0.2641 moles

Therefore :

M = moles / volume ( L )

M = 0.2641 / 1.5

=> 0.176 M

7 0

4 years ago

Calculate the pressure exerted by an book of mass 20kg occupying an area of 2 m square.

kotykmax [81]

The answer is 100 Pa.

The formula for calculating pressure is :

Pressure = Force ÷ Area

We are given that :

mass = 20 kg
area = 2 m²

We also know that :

Force = mass ×g

So, force will be :

F = 20 × 10
F = 200 N

Now, we can finally calculate pressure :

P = 200 ÷ 2
P = 100 Pa

8 0

2 years ago

In the following take CV = 20.8 and CP = 29.1 J⋅mol−1⋅°C−1 for nitrogen gas: (a) Three moles of nitrogen at 30°C, contained in a

vagabundo [1.1K]

Answer:

$224 \times 13313\frac{.131?}{?244}$

4 0

3 years ago

How many elements are in H a) 3 b) 2 c) 1 d) 5

Anestetic [448]

Answer: C (1)

Explanation:

H is only the element hydrogen.

7 0

3 years ago

Read 2 more answers

The density of a test tube is 2.3g/cm3. The volume of the test tube is 4 cm3. What is

Lesechka [4]

Answer:

B. 9.2g

Explanation:

Density is mass over volume:

d=m/v

Let's plug in the values:

2.3=m/4

Now we solve like an equation:

2.3*4=(m/4)*4

9.2=m

4 0

3 years ago