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Rama09 [41]
3 years ago
8

Can someone please help me?

Chemistry
1 answer:
Svet_ta [14]3 years ago
4 0

Answer:

D,E, and F are correct

Explanation:

Longer wavelengths = lower frequencies = lower energy

Shorter wavelength = high frequency = higher energy

Gamma rays have shortest wavelength and therefore highest frequency and energy

Radio waves equally have a shorter wavelength and therefore high frequency and energy

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What is the name of the compound Hg2O7
dalvyx [7]

Answer:

I believe it is Mercury (II) oxide

hope this helps

6 0
3 years ago
How many atoms are in KCI
vovikov84 [41]
<h3>Answer:</h3>

2 atoms

<h3>Explanation:</h3>
  • Compounds are substances that are formed when two or more elements chemically combine.
  • They are made up of molecules that contain different atoms from different elements.
  • For example, KCl is a compound that is made up of two atoms, one potassium atom and one chloride atom.
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3 0
3 years ago
Which is the larger atom kr Or As
nasty-shy [4]

Answer:

I think As is larger

Explanation:

5 0
3 years ago
How many carbon atoms are represented in the formula for CaMg3(CO3)4​
Galina-37 [17]
The formula is for 1 Calcium, 3 Magnesium, 4 Carbon, & 12 Oxygen. The 4 after the parenthesis of (CO3) distributes to each element.

Answer : There are 4 Carbon atoms in the formula.
3 0
3 years ago
Type the correct answer in the box.
IgorLugansk [536]

Answer:

a= <em>In scientific notation</em>

6.96000×10⁵ Km

b =<em>In  expanded notation</em>

0.00019 mm

Explanation:

Given data:

Radius of sun = 696000 Km

size of bacterial cell = 1.9 ×10⁻⁴ mm

Radius of sun in scientific notation = ?

Size of bacterial cell in expanded notation = ?

Solution:

Scientific notation is the way to express the large value in short form.

The number in scientific notation have two parts.

. The digits (decimal point will place after first digit)

× 10 ( the power which put the decimal point where it should be)

for example the number 6324.4 in scientific notation will be written as = 6.3244 × 10³

Radius of sun:

696000 Km

<em>In scientific notation</em>

6.96000 × 10⁵ Km

The expanded notation is standard notation of writing the numerical values which is normal way. The numbers are written as they are, without the power of 10.

Size of bacterial cell:

1.9 ×10⁻⁴ mm

<em>In  expanded notation</em>

1.9/ 10000 = 0.00019 mm

3 0
4 years ago
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