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
erik [133]
3 years ago
8

Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas

are formed when (46.3 g) 48.7 g of sodium are added to water? Show your work. Assume the sodium is limiting:
Na (s) + H2O (l) H2 (g) + NaOH (s)
Also if sodium is the limiting reactant, what does this indicate about H2O in this reaction?
Chemistry
1 answer:
IrinaK [193]3 years ago
7 0
<span>convert grams to moles then use the equatino to do moles of Na to moles of H2O then convert moles of H2O to molecules by using avogadros number (6.022e23)

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
</span>
You might be interested in
Do all colors of light have the same energy?
icang [17]
No, darker colors like purple and blue have higher wave frequency which transmit more energy.
6 0
3 years ago
Which functional group occurs in the monomers of addition polymers? How are these polymers different from one another?
mafiozo [28]

Addition Polymerization reaction also known as chain Polymerization reaction. Monomers must contain double bond as a functional group.

<h3>What is Polymerization Reaction? </h3>

The chemical reaction which involves the addition of monomers to form higher molecular mass molecules is known as polymerization. There are two basically two types of polymerization, one is chain-reaction (or addition) and the other is step-reaction (or condensation) polymerization.

<h3>Chain-reaction (addition) polymerization</h3>

One of the most common and important types of polymer reactions is chain-reaction (addition) polymerization. This type of polymerization involves three step process including two chemical entities. The first which is known simply as a monomer. It is initially exists as simple units. Normally in all cases, the monomers must have at least one carbon-carbon double bond. Ethylene is one of the best known example of a monomer which is used to make a common polymer.

<h3>Step-reaction (condensation) polymerization </h3>

It is second type of polymerization reaction. This polymerization method is used to produce polymers having lower molecular weight as compared to chain reactions and requires higher temperatures to occur.

In this type of reaction, monomers must have two functional group.

Thus, we concluded that the Monomers must contain double bond as a functional group in addition Polymerization reaction.

learn more about Polymerization reaction:

brainly.com/question/7025919

#SPJ4

8 0
2 years ago
What is the purpose of the scientific method? A. To make a guess in order to prove a hypothesis B. To provide a reliable answer
Dafna11 [192]

the is  answer d to use an experiment

6 0
3 years ago
Please help I am stuck
Ksenya-84 [330]
The theory of plate tectonics tells exactly where the continents were before Pangaea divided.

I'm not a 100% sure but I feel strong about is
8 0
3 years ago
Five kilograms of liquid carbon tetrachloride undergo a mechanically reversible, isobaric change of state at 1 bar during which
Drupady [299]

Answer:

Explanation:

From the information given:

Mass of carbon tetrachloride = 5 kg

Pressure = 1 bar

The given density for carbon tetrachloride = 1590 kg/m³

The specific heat of carbon tetrachloride =  0.84 kJ/kg K

From the composition, the initial volume of carbon tetrachloride will be:= \dfrac{5 \ kg }{1590 \ kg/m^3}

= 0.0031 m³

Suppose \beta is independent of temperature while pressure is constant;

Then:

The change in volume can be expressed as:

\int ^{V_2}_{V_1} \dfrac{dV}{V} =\int ^{T_2}_{T_1} \beta dT

In ( \dfrac{V_2}{V_1})  = \beta (T_2-T_1)

V_2 = V_1 \times exp (\beta (T_2-T_1))

V_2 = 0.0031 \ m^3  \times exp  (1.2 \times 10^{-3} \times 20)

V_2 = 0.003175 \ m^3

However; the workdone = -PdV

W = -1.01 \times 10^5 \ Pa \times ( 0.003175 m^3 - 0.0031 \ m^3)

W = - 7.6 J

The heat energy Q = Δ h

Q = mC_p(T_2-T_1)

Q = 5 kg \times 0.84 \ kJ/kg^0 C \times 20

Q = 84 kJ

The internal energy is calculated by using the 1st law of thermodynamics; which can be expressed as;

ΔU = ΔQ + W

ΔU = 84 kJ + ( -7.6 × 10⁻³ kJ)

ΔU = 83.992 kJ

3 0
3 years ago
Other questions:
  • A six carbon carbohydrate would have how many hydrogen atoms?
    7·1 answer
  • Calculate the mass of a liquid with a density of 2.5 g/ml and a volume of 15ml
    8·2 answers
  • please help with filling out the chart based off the given information. and if able to show work so I can understand how to do i
    5·1 answer
  • For each of the 3 ionic compounds, select the main group element "X" belongs to...
    5·1 answer
  • Convert 7.60 x1021 molecules of CO to Liters.
    7·1 answer
  • SELECT ALL THAT APPLY:
    11·1 answer
  • V2O5 + Ca = V + CaO balance the eqaution
    6·1 answer
  • Please answer correctly !!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!!
    9·2 answers
  • Copper(11) sulfate is a bluish color. If you could choose between a red wavelength of a blue wavelength
    15·1 answer
  • Two atoms with atomic numbers 12 and 17 would
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!