2 years ago

Chose one that best fits the question

Chemistry

2 answers:

kramer2 years ago

6 0

Answer:

Explanation:

The fourth one.

ch4aika [34]2 years ago

6 0

Answer:

Explanation:

Liquid gas plasma solid! Hope's this helps!

You might be interested in

What is the mass number of lithium isotope that consists of 3 protons, 4 neutron and 3 electrons

sweet-ann [11.9K]

Answer:

7. ok

please mark me brainlistb

6 0

2 years ago

Cesium has a radius of 272 pm and crystallizes in a body-centered cubic structure. What is the edge length of the unit cell

olchik [2.2K]

Answer: Edge length of the unit cell = 628pm

Explanation: For a body centred cubic structured system, the relationship between the edge length of the unit cell and radius of the atoms in the structure is

Edge length of Unit cell (a) = (4R)/(√3)

R = 272pm = (272 × (10^-12))m = (2.72 × (10^-10))m

a = (4 × (2.72 × (10^-10)))/(√3)

a = (6.28157 × (10^-10))m = 628pm

4 0

2 years ago

A sample of methane gas has a volume of 10 l at a pressure of 1.5 atm and a temperature of 20 °c. what volume does the gas occup

a_sh-v [17]

We can use combined gas laws to solve for the volume of the gas
$\frac{PV}{T}$
where P - pressure, V - volume , T - temperature and k - constant
$\frac{P1V1}{T1} = \frac{P2V2}{T2}$
parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation
T1 - temperature in Kelvin - 20 °C + 273 = 293 K
T2 - 40 °C + 273 = 313 K
substituting the values
$\frac{1.5 atm*10L}{293 K} = \frac{0.9 atm*V}{313K}$
V = 17.8 L
volume of the gas is 17.8 L

7 0

2 years ago

20. A compound's empirical formula is C,H,O. If the molecular mass of the compound is

kozerog [31]

Answer:

Just use a text book.. So that you get the concept

6 0

2 years ago

Evaluate<br> 0.411 + 9.9 + 0.8<br> and round the answer appropriately,

Lemur [1.5K]

Answer:

the answer is 11.111 and when you round it to the nearest one it’s 11, but to the nearest tenth it’s 10

Explanation:

8 0

2 years ago