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
Arisa [49]
2 years ago
15

When hydrochloric acid is poured on limestone, the mixture fizzes, releasing a colorless, odorless gas. The equation for this ch

emical reaction is located below. What is the identity of the gas?
CaCO3(s) + 2 HCl(aq) ---> CaCl2(aq) + CO2(g) + H2O(l)

Select one:
a. CaCl2
b. CaCO3
c. CO2
d. H2O​
Chemistry
1 answer:
ruslelena [56]2 years ago
7 0

Answer:

pretty sure its B

Explanation:

You might be interested in
Chlorine, Cl2,is a gas at room temperature, but bromine, Br2, is a liquid. Why?
Alja [10]

<em>Explanation</em>

Halogens => Cl, Br, I, F => exist as diatomic molecules at room temperature and atmospheric conditions.

F2 and Cl2 are gases

Br2 is liquid

I2 is solid

-----

3 0
1 year ago
What is the wavelength of radio waves? Which statement is true for a cooling curve? A. It shows how the temperature of the subst
ladessa [460]

Answer:

Most radio waves have wavelengths between 1 mm and 100 km.

A cooling curve shows A. how the temperature of a substance falls as heat is removed.

Explanation:

<em>Radio waves</em> are the longest of all the waves in the electromagnetic spectrum.

Most have wavelengths between 1 mm and 100 km, although there is no upper limit.

Some radio waves have wavelengths of 10 000 km.

A <em>cooling curve</em> (see image below) shows how the temperature of a substance falls as it is cooled.

In Option E., a decrease in temperature would cause an energy <em>loss</em>.

Options B., C., and D. involve the <em>addition of heat</em>.

5 0
3 years ago
1s22s22p63s23p3<br> what element does this represent
s344n2d4d5 [400]

Answer:

Its phosphorus (P)

Explanation:

In writing the electron configuration for Phosphorus the first two electrons will go in the 1s orbital. Since 1s can only hold two electrons the next 2 electrons for Phosphorous go in the 2s orbital. The next six electrons will go in the 2p orbital. The p orbital can hold up to six electrons. We'll put six in the 2p orbital and then put the next two electrons in the 3s. Since the 3s if now full we'll move to the 3p where we'll place the remaining three electrons. Therefore the Phosphorus electron configuration will be 1s22s22p63s23p3.

3 0
2 years ago
Please help Me I really need it
butalik [34]
Can you show the question that goes with those answer pls
7 0
2 years ago
What is the percent composition of NaHCO3?
zhuklara [117]

Answer:

                Option-C (27.36% Na, 1.20% H, 14.30% C, and 57.14% O)

Explanation:

<em>Percent Composition</em> is defined as the <u><em>%age by mass of each element present in a compound</em></u>. Therefore, it is a relative amount of each element present in a compound.

Calculating Percent Composition of NaHCO₃:

1: Calculating Molar Masses of all elements present in NaHCO₃:

              a) Na  =  22.99 g/mol

             b) H  =  1.01 g/mol

              c) C  =  12.01 g/mol

              d) O₃  =  16.0 × 3 =  48 g/mol

2: Calculating Molecular Mass of NaHCO₃:

              Na  =  22.99 g/mol

             H    =  1.01 g/mol

              C    =  12.01 g/mol

              O₃  =  48 g/mol

                       ----------------------------------  

Total                  84.01 g/mol

3: Divide each element's molar mass by molar mass of NaHCO₃ and multiply it by 100:

For Na:

                 =  22.99 g.mol⁻¹ ÷ 84.01 g.mol⁻¹ × 100

                 =  27.36 %

For H:

                 =  1.01 g.mol⁻¹ ÷ 84.01 g.mol⁻¹ × 100

                 =  1.20 %

For C:

                 =  12.01 g.mol⁻¹ ÷ 84.01 g.mol⁻¹ × 100

                 =  14.29 % ≈ 14.30 %

For O:

                 =  48.0 g.mol⁻¹ ÷ 84.01 g.mol⁻¹ × 100

                 =  57.13 % ≈ 57.14 %

8 0
3 years ago
Other questions:
  • Calculate the ph of a solution in which [oh−]=7.1×10−3m.express the ph of the solution to two decimal places.
    6·1 answer
  • When a substance changes from one phase to another, which of the following occurs?
    9·1 answer
  • What do scientist do to easily share measurement data they can understand
    8·1 answer
  • Why is helium in group 18 on the periodic table though it only has 2 valence electrons?
    13·1 answer
  • “Copper pots are the best pots for cooking food quickly.” Which term best describes this statement?
    8·1 answer
  • Doing another onee! 50 points for answering thiss!
    8·2 answers
  • Is the following set of quantum numbers a valid set?<br><br> [3, 2, 2, 1/2]
    9·1 answer
  • A face centered cubic cell has an edge length of 495 pm. What is that atomic radius?
    14·1 answer
  • If an area bans pesticides and fertilizers to clean up the water supply, how might this affect farmers or food resources in that
    15·1 answer
  • Water has a formula of H2O. Based on the formula which is NOT a correct statement?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!