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Readme [11.4K]
3 years ago
6

Let's practice calculating mass number. If an atom has 3 protons and neutrons, what's the mass number

Chemistry
1 answer:
kicyunya [14]3 years ago
5 0
The mass number is the same as the number of neutrons
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Help me in a quiz this is last Q!
Eduardwww [97]

Answer:

aman tanrım türk müsün

ismin türk ismi

oh my god are you turkish

your name is Turkish name

wooow

6 0
3 years ago
Read 2 more answers
What do you think happens to the bonds between atoms when substances melt?
Eduardwww [97]

Answer:

As a substance melts, and goes from a solid to a liquid state, the kinetic energy of the molecules increases, and the molecules move faster, and they separate further and further away from each other.  The intermolecluar forces holding the molecules together become weaker.  This is why a liquid can take fill the shape of its container, whereas a solid has a fixed shape.

Explanation:

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6 0
3 years ago
The depictions of ionic compounds do not show distinct compound units but rather a collection of ions in the ratio given by the
Sedaia [141]

Answer:

The ionic compound NaCl has a Face Centered Cubic unit cell

The site for atoms are Face, center and Edges corner.

Effective number of atoms

Na+

1centers + 12edges x\frac{1}{4} = 4 Na+  

Cl-

6face x\frac{1}{2}  + \frac{1}{8} x8 corners = 4Cl-

This is just one unit cell effective atom, there are thousand's of such unit cells are combined to form one such structure of NaCl. The real formula of NaCl is Na4Cl4 but for simplicity we use empirical formula that is NaCl.

4 0
3 years ago
Bronze is an alloy made of mostly copper (Cu) and tin (Sn). What type of bond forms bronze?
Snezhnost [94]

Answer:

A. Metallic bond

Explanation:

Think about it: copper and tin are both common metals. That's how we know it's a metallic bond!

Why not B: Covalent bonds are between two nonmetals.

Why not C: Ionic bonds are between a nonmetal and a metal.

Why not D: Paired bond isn't a common phrase in chemistry.

6 0
4 years ago
What is the molecular formula of the compound whose molar mass is 90.08 g/mol and empirical formula is CH2O??
KIM [24]
Let (CH2O)n be molecular formula,
(12+1+1+16)n=90.08
30n=90.08
n=3
molecular formula: (CH2O) 3= C3H6O3
7 0
3 years ago
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