1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Eddi Din [679]
3 years ago
10

You will analyze four substances in this lab. Based on their chemical formulas and what you already know about covalent and ioni

c compounds, make a prediction for each compound.
Oil, which is built from the nonmetals hydrogen, carbon, and oxygen:
Cornstarch, a carbohydrate consisting of hydrogen, carbon, and oxygen:
Sodium chloride (table salt), whose formula is NaCl:
Sodium bicarbonate (sodium bicarbonate), whose formula is NaHCO3:
Chemistry
2 answers:
Phoenix [80]3 years ago
7 0

Answer: Oil: covalent

Cornstarch: Covalent

Sodium chloride: Ionic

Sodium bicarbonate: Ionic

Explanation: Covalent compounds are formed by sharing of electrons between non metals whereas ionic compounds are formed by transfer of electrons from metals to non metals.

1. Oil, which is built from the nonmetals hydrogen, carbon, and oxygen: forms a covalent compound by sharing of electrons between non metals hydrogen, carbon, and oxygen. Covalent compounds are insoluble in water.

2. Cornstarch, a carbohydrate consisting of hydrogen, carbon, and oxygen: forms a covalent compound by sharing of electrons between non metals hydrogen, carbon, and oxygen. Covalent compounds are insoluble in water.

3. Sodium chloride (table salt), whose formula is NaCl is formed by transfer of electrons from sodium to chlorine.Ionic compounds are soluble in water.

4. Sodium bicarbonate, whose formula is NaHCO_3 is formed by transfer of electrons from sodium to HCO_3.Ionic compounds are soluble in water.

marin [14]3 years ago
3 0

Answer:

Answer: Oil: covalent

Cornstarch: Covalent

Sodium chloride: Ionic

Sodium bicarbonate: Ionic

Explanation:

You might be interested in
What is the frequency of an x-ray with a wavelength of 1.15 times 10^-10?
diamong [38]
The answer to the problem is 11.615
5 0
3 years ago
A 1.897g sample of Mg(HCO3)2 was heated and decomposed. When the sample
svlad2 [7]

1.5 % is the percent yield in the reaction.

Explanation:

Given that:

original mass of the sample used in reaction = 1.897 grams

product formed after decomposition = 1.071 grams

The reaction for the decomposition:

Mg(HCO3)2 (s) ⇒ CO2 (g) + H2O (g) + MgCO2 (s)

It says that 1 mole of Mg(HCO3)2  yielded 1 mole of  MgCO2  on decomposition

68.31 grams/mole or 68.31 grams of MgCO2 is formed

percent yield = \frac{actual yield}{theoretical yield} x 100

putting the values in the equation:

percent yield = \frac{1.071}{68.31}

                       = 0.015 x100

   PERCENT YIELD = 1.5 %

8 0
3 years ago
CAN SOMEONE HELP ME? I NEED HELP ASAP PLZ!!!! TODAY!!!!! #4-#7
evablogger [386]
4.it tells you that baking soda is an alkali
5. Because it it is very acidic it means it might not have very much water
6. Acid and more less then 7
7. It is different because it measures all different things where as the fahrenheit temperature only measures the temperature
Sorry about number 7 it isn't very good
4 0
3 years ago
Nitrogen dioxide gas is dark brown in color and remains in equilibrium with dinitrogen tetroxide gas, which is colorless.
sukhopar [10]

Answer:

This reaction is exothermic because the system shifted to the left on heating.

Explanation:

2NO₂ (g) ⇌ N₂O₄(g)

Reactant => NO₂ (dark brown in color)

Product => N₂O₄ (colorless)

From the question given above, we were told that when the reaction at equilibrium was moved from room temperature to a higher temperature, the mixture turned dark brown in color.

This simply means that the reaction does not like heat. Hence the reaction is exothermic reaction.

Also, we can see that when the temperature was increased, the reaction turned dark brown in color indicating that the increase in the temperature favors the backward reaction (i.e the equilibrium shift to the left) as NO₂ which is the reactant is dark brown in color. This again indicates that the reaction is exothermic because an increase in the temperature of an exothermic reaction will shift the equilibrium position to the left.

Therefore, we can conclude that:

The reaction is exothermic because the system shifted to the left on heating.

8 0
3 years ago
NEED HELP ASAP
Thepotemich [5.8K]

I'll see what I can do here...

1) Nonmetal

2) Calcium (Ca), chemical element, one of the alkaline-earth metals of Group 2 (IIa) of the periodic table.

3) Hafnium

4) 204.3833 u

5) Not sure what you're asking, but oble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og)

6) The metalloids; boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), polonium (Po) and astatine (At)

7) The Actinide series contains elements with atomic numbers 89 to 103 and is the third group in the periodic table.

8) 33

9) 88

10) 30

Hope this helps!

8 0
3 years ago
Read 2 more answers
Other questions:
  • If the reaction yield is 88.2%,what mass in grams of hydrogen is produced by the reaction of 7.73 g of magnesium with 1.31 g of
    13·1 answer
  • Solubility is usually expressed as the maximum number of grams of
    8·1 answer
  • If the evidence you collect during experiments does not support your hypothesis, what should happen to that hypothesis.
    15·1 answer
  • When water turns to ice does it add or take away energy?
    6·1 answer
  • Which of the following correctly describes what happens to the kinetic energy of water when it changes from steam to a liquid? T
    11·1 answer
  • In the balanced reaction below, what is the mole ratio comparing iron (Fe) and oxygen gas (O2)?
    10·2 answers
  • Over the past week, Anna has been very curt with shondra, and when she ask if she has done something to offend her, Anna tersely
    10·1 answer
  • PLZ HELP! WILL GIVE BRAINLIEST, 5 STARS, AND A THANKS!!
    6·1 answer
  • Who are you voting for? if u r and if u could
    10·2 answers
  • What is neutralisation??​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!