A classroom has a volume of 278 m3. What is its volume in<br> km3

27/13Al+4/2He >>>> 30/15P+

Veseljchak [2.6K]

Answer

Explanation:

27/13Al+4/2He >>>> 30/15P+

5 0

3 years ago

Classify each of the following as a homogeneous or heterogeneous substance.

Mnenie [13.5K]

Answer:

a). iron ore - is a heterogeneous substance.

b). quartz - is a homogeneous substance.

c). granite - is a heterogeneous substance.

d). energy drink - is a heterogeneous substance.

e). oil-and-vinegar salad dressing - is a heterogeneous substance.

f). salt - is a homogeneous substance.

g). rainwater - is a heterogeneous substance.

h). nitrogen - is a homogeneous substance.

Explanation:

a). iron ore - is a heterogeneous substance as iron core contains iron and other impurities

b). quartz - is a homogeneous substance as it is only made up of carbon

c). granite - is a heterogeneous substance as it is made up of multiple minerals.

d). energy drink - is a heterogeneous substance as it contains various substances mixed in it

e). oil-and-vinegar salad dressing - is a heterogeneous substance as oil and vinegar itself are different compounds

f). salt - is a homogeneous substance as it only contains one type of molecule

g). rainwater - is a heterogeneous substance as it contains water and other minerals

h). nitrogen - is a homogeneous substance as it is only made of one type of molecule.

5 0

1 year ago

Choose the substance with the highest surface tension.

umka2103 [35]

Answer:

Hello

you're answer should be E.HOCH2CH2OH

hope this answer is correct

8 0

2 years ago

What is the name of CH=CH2

Strike441 [17]

Answer:

CH2 is the chemical name for methylene and belongs to the general compound category of Alkenes. It comprises of a single carbon atom bonded with 2 hydrogen atoms . The general formula for alkenes is C(n)H(2n) with n denoting the number of carbon atoms and thus deciding the name of the compound.

Explanation:

4 0

3 years ago

Read 2 more answers

Calculate the pressure of 3.2 moles of an ideal gas that occupies a volume of 87 m3 at a temperature of 312 K.

Anestetic [448]

Answer:

P = 0.0009417 atm

Or,

P = 9.417 × 10⁻⁴ atm

Or,

P = 0.0954157 kPa

Or,

P = 0.715677 mmHg (Torr)

Explanation:

Data Given:

Moles = n = 3.2 mol

Temperature = T = 312 K

Pressure = P = ?

Volume = V = 87 m³ = 87000 L

Formula Used:

Let's assume that the gas is acting as an Ideal gas, the according to Ideal Gas Equation,

P V = n R T

where; R = Universal Gas Constant = 0.082057 atm.L.mol⁻¹.K⁻¹

Solving Equation for P,

P = n R T / V

Putting Values,

P = (3.2 mol × 0.082057 atm.L.mol⁻¹.K⁻¹ × 312 K) ÷ 87000 L

P = 0.0009417 atm

Or,

P = 9.417 × 10⁻⁴ atm

Or,

P = 0.0954157 kPa

Or,

P = 0.715677 mmHg (Torr)

4 0

3 years ago

Read 2 more answers

A classroom has a volume of 278 m3. What is its volume in km3