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
anzhelika [568]
3 years ago
14

Which are balanced and which are unbalanced?

Chemistry
1 answer:
erica [24]3 years ago
3 0

A. is balanced

B. is not balanced

C. is not balanced

You might be interested in
All the elements in group 1 react with water to form a hydroxide. What other substance is also
Iteru [2.4K]
I’m not 100% sure, but I think hydrogen gas is also produced :)
7 0
3 years ago
A piece of unknown metal weighs 348g. When the metal piece absorbs 6.64kj of heat , its temperature increases from 24.4C to 43.6
Morgarella [4.7K]

Answer:

This metal could be the aluminium with a specific heat of H = 993 \frac{J}{kgC}

Explanation:

A pie of unknown metal presents a mass (M) of 348 g. This metal is heated using energy (E) of 6.64 kJ and the temperature increases from T1 =24.4 to T2 =43.6°C. We can calculate the specific heat (H) of this metal as follows

H = \frac{E}{M*(T2-T1)}

We can replace previously presented data in this equation. After simplifying and converting to adequated units, we found that

H = \frac{6640 J}{0.348 Kg*(43.6-24.4) C} =\frac{6640 J}{6.686 KgC}

Finally, the specific heat of this metal is

H = 993 \frac{J}{kgC}

The aluminium could be the metal, its specific heat is similar to that found in this problem.

Finally,  we can conclude that this metal could be the aluminium with a specific heat of H = 993 \frac{J}{kgC}

7 0
3 years ago
What does contact forces and non-contact forces mean?
Dmitrij [34]
A contact force is a force in which and object comes in contact with a another object. A non-contact force, is a force is an object applied by another body. (A good example of a non-contact force is gravity)
8 0
3 years ago
Suppose that you add 26.7 g of an unknown molecular compound to 0.250 kg of benzene, which has a K f Kf of 5.12 oC/m. With the a
kiruha [24]

From the calculation, the molar mass of the solution is 141 g/mol.

<h3>What is the molar mass?</h3>

We know that;

ΔT = K m i

K = the freezing constant

m = molality of the solution

i = the Van't Hoft factor

The molality of the solution is obtained from;

m = ΔT/K i

m = 3.89/5.12 * 1

m = 0.76 m

Now;

0.76 =  26.7 /MM/0.250

0.76 = 26.7 /0.250MM

0.76 * 0.250MM =  26.7

MM= 26.7/0.76 * 0.250

MM = 141 g/mol

Learn more about molar mass:brainly.com/question/12127540?

#SPJ12

5 0
2 years ago
All answers must have the correct unit! (g/mL) d= mass/volume, d= masa/volumen
Radda [10]

heh.......... sorry man............... but this was posted over 5 hours ago........ so nobody is gonna see it and you probably dont need the answer anymore..... so errrr..... imma justtttt..... take these points :D

8 0
3 years ago
Other questions:
  • In this Punnett square, what is the probability of the offspring being a heterozygous purple flower
    9·1 answer
  • If the role of neutrons in an atom is to maintain stability, how is a hydrogen atom stable in nature? ( hydrogen atom is the onl
    12·1 answer
  • Water has a density 1.0 g/cm3. What is the mass of 10.0 cm3 of water?
    12·1 answer
  • The equation for the pH of a substance is pH = –log[H+], where H+ is the concentration of hydrogen ions. A basic solution has a
    14·2 answers
  • Once of the skills necessary for this experiment is dilution. If you have 1.95 mL of .806 M bleach, what will be the new concent
    6·1 answer
  • What is the unit of measurement used to report mass
    6·2 answers
  • Using the periodic table as a reference, which elements could bond to form a compound most like NaCl?
    11·1 answer
  • Vitamin C is important in the formation collagen, a protein that holds together the connective tissue
    12·1 answer
  • Diabetes occurs when there is a large amount of sugar in the blood. Which gland is most likely not functioning well enough in a
    15·1 answer
  • What is the H concentration in a solution with a pH of 1. 25? Round to the nearest hundredth. × 10n M n=.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!