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Oksana_A [137]
2 years ago
13

What is the volume of a solution that has a specific gravity of 1. 2 and a mass of 185g.

Chemistry
1 answer:
muminat2 years ago
7 0
Volume 2 if I am correct
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What characteristic of an element’s atoms always determines the element’s identity?
dmitriy555 [2]

Answer:

Number of protons

Explanation:

There are three sub atomic particles. These are;

- Protons

- Electrons

- Neutrons

Among these three particles, only one determines the identity of the element. This is the Protons. The number of protons which is also called the atomic number determines the identity of an element. For instance, atom with one proton is Hydrogen and n other element can have atomic number of one.

6 0
3 years ago
How many moles of iron are there in 55.85g of Fe3O4
soldier1979 [14.2K]

Answer:

• Molecular mass of Iron (III) tetraoxide

\dashrightarrow \: { \tt{(56 \times 3) + (16 \times 4)}} \\  = { \tt{168 + 64}} \\  = { \tt{232\:g}}

[ molar masses: Fe → 56, O → 16 ]

\dashrightarrow \:{ \rm{232 \: g \:  = 1 \: mole}} \\ \\   \dashrightarrow \: { \rm{55.85 \: g = ( \frac{55.85}{232}) \: moles }} \\  \\ \dashrightarrow \:  { \boxed{ \tt{ = 0.24 \: moles}}}

8 0
2 years ago
How does heat affect the motion of atoms?
Black_prince [1.1K]
Due to heat , the kinetic energy of the atoms in the substance increases due to which they start vibrating vigorously and the inter-molecular attraction decreases and the substance increases in volume. For example, on boiling water...heat energy imparted makes the volume increase and finally turn into steam or water vapour in air.(The inter-molecular space in air is more than that in water.)
3 0
3 years ago
2. When multiplying or dividing measured numbers, we use the measurement with the least number of
Goryan [66]

Answer:

a. 105

b. 76.4

c. 0.04

d. 4.000

Explanation:

Question a. has three significant figures

Question b. has three significant figures

Question c. has one significant digit (only the 3 is significant in the question, zeros are only significant if they are trailing with the presence of a decimal point or in between two non-zero numbers)

Question d. has four significant figures

4 0
3 years ago
What is the correct electron configuration for 48Cd
kherson [118]

Answer:

1s² 2s²2p⁶ 3s²3p⁶ 4s²3d¹⁰4p⁶ 5s²4d¹⁰

Explanation:

Cd is the last element in the 4d block of the Periodic Table (see Figure).

It has the electron configuration of Kr, plus filled 5s and 4d subshells.

Thus, its electron configuration is

1s² 2s²2p⁶ 3s²3p⁶ 4s²3d¹⁰4p⁶ 5s²4d¹⁰

3 0
3 years ago
Read 2 more answers
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