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Olegator [25]
3 years ago
12

Which of the following is a way in which elements and compounds are similar?

Chemistry
2 answers:
nordsb [41]3 years ago
5 0

Answer:

Compound Element

Definition: A compound contains atoms of different elements chemically combined together in a fixed ratio.

Definition: An element is a pure chemical substance made of same type of atom.

Elements and compounds are purely homogeneous substances and they have a constant composition throughout. Elements and compounds cannot be separated into their respective constituents by physical means. Compounds and mixtures are made up of different elements or different atoms.

Hopefully this helps you!!!!

wariber [46]3 years ago
5 0

Answer:

Elements and compounds can be broken down by physical means

Explanation:

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In need of some help with this question please~
NeTakaya

Answer:

5.60 Liters at STP

Explanation:

First you need the balanced reaction equation

2 H2 +  O2   ====>   2  H2O

4 g of oxygen ( O<u>2</u> )  is   4/(15.999*2) moles of O2     (using periodic table)

  Twice the number of moles of H2O re produced   (from equation)

     at STP the volume of a mole of gas is 22.4 liter/ mole

       put all of this together  

         2 *   4 / (15.999*2) moles * 22.4 L/mole = 5.60 L

5 0
2 years ago
What is the initial pressure of a gas if it’s occupied a volume of 0.375 L but now occupies a volume of 1.25 L at a pressure of
MrMuchimi

Answer:

318 kPa

Explanation:

Step 1: Given data

  • Initial pressure (P₁): ?
  • Initial volume (V₁): 0.375 L
  • Final pressure (P₂): 95.5 kPa
  • Final volume (V₂): 1.25 L

Step 2: Calculate the initial pressure of the gas

Assuming constant temperature and ideal behavior, we can calculate the initial pressure of the gas using Boyle's law.

P₁ × V₁ = P₂ × V₂

P₁ = P₂ × V₂ / V₁

P₁ = 95.5 kPa × 1.25 L / 0.375 L = 318 kPa

7 0
2 years ago
What conditions are needed for heat to flow
Setler79 [48]

Answer:

Two object must have different temperatures

Explanation:

Heat Transfer can occur in 3 ways: Conduction, Convection, and Radiation

4 0
3 years ago
In an exothermic reaction, the average kinetic energy of the particles of matter ib the products _____
erastova [34]

Answer:

decreases

Explanation:

I'm hope it's correct

3 0
2 years ago
2. Write the formula or name for the following
Tems11 [23]

Answer:

Diphosphorus pentoxide

Carbon dichloride

BCl3

N2H4

Explanation:

These are all covalent compounds. To name covalent compounds, you add prefixes to the beginning of their names depending on what the subscript is of each element. The prefixes are:

1: Mono

2: Di

3: Tri

4: Tetra

5: Penta

6: Hexa

7: Hepta

8: Octa

9: Nona

10: Deca

For example, since the first one is Phopsphorus with a 2 next to it, you add the prefix Di to it.

If the first element in the compound only has one, meaning no number next to it, you do not say mono. This is why we just say "Carbon" for the second one instead of "Monocarbon."

Finally, you always have to end the second element in the compound with "ide." So, "chlorine" becomes "chloride," "oxygen" becomes "oxide," and so on.

7 0
3 years ago
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