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Helen [10]
3 years ago
5

The table lists the chemical formulas or symbols of a few common substances. Which two substances are compounds? A) aluminum and

iron B) iron and sodium chloride C) carbon dioxide and aluminum D) sodium chloride and carbon dioxide
Chemistry
2 answers:
katrin [286]3 years ago
7 0
D is the correct answer

every other option contains an element
Tatiana [17]3 years ago
7 0

The answer is D because both sodium chloride and carbon dioxide contain more than one element. This is indicated by their formulas, which contain the symbols for two elements each.

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Which pair will for an ionic compound
vovikov84 [41]

Answer: A pair of elements will most likely form an ionic bond if one is a metal and one is a nonmetal. These types of ionic compounds are composed of monatomic cations and anions.

Explanation:

A pair of elements will most likely form an ionic bond if one is a metal and one is a nonmetal. These types of ionic compounds are composed of monatomic cations and anions.

Explanation:

The chart below shows monatomic ions formed when an atom loses or gains one or more electrons, and the ionic compounds they form. You can check your periodic table to see that the cations are monatomic ions formed from metals, and the anions are monatomic ions formed from nonmetals.

3 0
2 years ago
Please help , science tho. by the way i have to do 5
kap26 [50]

Answer:

850

Explanation:

It's between 840 and 860

8 0
2 years ago
How many atoms are in 2.10 g of K? molar mass of K=39.10g/mole.
Alborosie

Answer:

<h3>The answer is option B</h3>

Explanation:

To calculate the number of atoms we must first calculate the number of moles

Molar mass = mass / number of moles

number of moles = mass / Molar mass

Molar mass (K) = 39.10mole

mass = 2.10g

number of moles = 2.10/ 39.10

= 0.0537mol

After that we use the formula

N = n × L

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10^23 entities

Number of K atoms is

N = 0.0537 × 6.02 × 10^13

<h3>N = 3.23×10^22 atoms of K</h3>

Hope this helps you.

5 0
3 years ago
Nonmetals are defined as elements that generally cannot conduct:.
polet [3.4K]

Answer:

Electricity

Explanation:

Nonmetals are defined as elements that generally cannot conduct electricity

3 0
2 years ago
What happens to ice as it warms up
son4ous [18]
Ice starts to melt and turns into water as it melts
7 0
3 years ago
Read 2 more answers
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