All categories

2 years ago

Physical or chemical ?

Chemistry

1 answer:

Artist 52 [7]2 years ago

7 0

Answer:

P,C,P,C,P,C,P,P,C,P

Explanation:

You might be interested in

If your really kind please help I just want help

Eva8 [605]

Thyroid hormones T4, T3
Cortisol
Estrogen or testosterone
Insulinlike growth factor-I (IGF-I)

4 0

3 years ago

Which is the empirical formula for a compound that contains 64.75g nitrogen and 185.25 oxygen

Svetach [21]

Answer:

What is the formula for a compound that contains 64.75 g nitrogen and 185.25 g oxygen? D. N2O5

The name of a hydrate is calcium chloride dihydrate. What is its formula? B. CaCl2 x 2H20

Explanation:

BRAINLIEST PLZZZZ

5 0

3 years ago

To how much water should 100 ml of 18m sulfuric acid be added to prepare a 1.5m solution

SashulF [63]

Answer:

Take 100 ml of a 18 molar solution. The total number of moles is (1 liter/1000 ml) 100 ml 18 moles is 1.8 moles.

1.5 moles in 1 liter so If 1.1 liters of water is added, the total volume is 1.2 liters and 1.8 moles are dissolves in it. 1.8 moles/ 1.2 liters is 1.5 moles per liter.

5 0

3 years ago

PLEASE HURRY

ladessa [460]

Answer:

C. Galactic disk

Explanation:

The galactic disk is a component of the spiral galaxies and consists of stellar and gaseous components as it forms a random motion with the circular objects that orbit around the galactic center.

The rotational curve in a milky way is similar to that of the rotation of the universal rotating disk and is evident by the dark matter in the galaxies.

8 0

2 years ago

Draw the Lewis structure for the compound with the formula COCl2COCl2. Use lines to show bonding electrons.

stira [4]

Answer : The Lewis-dot structure of $COCl_2$ is shown below.

Explanation :

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

The given molecule is, $COCl_2$

As we know that carbon has '4' valence electrons, chlorine has '7' valence electron and oxygen has '6' valence electrons.

Therefore, the total number of valence electrons in $COCl_2$ = 1(4) + 2(7) + 1(6) = 24

According to Lewis-dot structure, there are 8 number of bonding electrons and 16 number of non-bonding electrons.

6 0

3 years ago