All categories

3 years ago

Every element and compound has a unique set of properties. True or False?

Chemistry

1 answer:

velikii [3]3 years ago

6 0

Answer:

So the answer to "every element and compound has a unique set of properties. True or False?" is TRUE

Explanation:

You might be interested in

If a combination reaction takes place between rubidium and bromine, the chemical formula for the product is

lesya [120]

The chemical formula for the product is RbBr.

7 0

3 years ago

Estradiol is a female sexual hormone that causes maturation and maintenance of the female reproductive system. Elemental analysi

Ipatiy [6.2K]

Answer:

The molecular formula of estradiol is: $C_{18}H_{24}O_2$ .

Explanation:

Molar mass of of estradiol = M= 272.37 g/mol

Let the molecular formula of estradiol be $C_xH_yO_z$

Percentage of an element in a compound:

$\frac{\text{Number of atoms of element}\times \text{Atomic mass of element}}{\text{molecular mass of element}}\times 100$

Percentage of carbon in estradiol :

$\frac{x\times 12 g/mol}{272.37 g/mol}\times 100=79.37\%$

x = 18.0

Percentage of hydrogen in estradiol :

$\frac{y\times 1g/mol}{272.37 g/mol}\times 100=8.88\%$

y = 24.2 ≈ 24

Percentage of oxygen in estradiol :

$\frac{z\times 16 g/mol}{272.37 g/mol}\times 100=11.75\%$

z = 2

The molecular formula of estradiol is: $C_xH_yO_z:C_{18}H_{24}O_2$

7 0

3 years ago

The temperature of a sample of gas at 8.5 atm and 59.2 °C increases to 140.0 °C. If the

labwork [276]

Answer:

since that's the closest option we have

10.6atm

Explanation:

Since volume is constant

P1/T1 = P2/T1

P1 =8.5atm

T1 = 59.2°C = 332.2k

T2 = 140°C = 413k

P2 = ?

8.5/332.2 = P2/413

0.026 = P2/413

P2 = 0.026 x 413

P2 = 10.74atm

5 0

3 years ago

How many protons, neutrons, and electrons does S^2- have

adell [148]

Answer:

The protons and electrons in each element are equal. The sulfur has 16 electrons and 16 protons. But the ionic atom's electron quantity changes depending on how many it has gained. 'S2-' has gained 2 electrons, which means it has now 18 electrons and 16 protons. 16 neutrons

Explanation:

5 0

3 years ago

4. Mendeleev created the first periodic table by arranging elements in order of

PtichkaEL [24]

Answer:

Explanation:

C is the answer for increasing Atomic number

3 0

3 years ago