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
ArbitrLikvidat [17]
3 years ago
13

Complete the calculation to find the mass of 1 mole of water (H2O). Use the atomic weights given in the periodic table. Select t

he correct option from each drop-down menu.
Chemistry
1 answer:
elena55 [62]3 years ago
6 0

Answer:

2x( 1.008 g/mol) +1 x (15.999 g/mol) = 18.015 g/mol

Explanation:

You might be interested in
A sample of a substance containing only magnesium and chlorine was tested in the lab and was found to be composed of 74.5% chlor
chubhunter [2.5K]
Use a ratio to find out that x/190.2 = 74.5/100 

hope this helps
8 0
2 years ago
A lead mass is heated and placed in a foam cup calorimeter containing 40.0 mL of water at 17.0°C. The water reaches a temperatur
lbvjy [14]

Answer: 502 Joules

Explanation:

To calculate the mass of water, we use the equation:

\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}

Density of water = 1 g/mL

Volume of water = 40.0 mL

Putting values in above equation, we get:

1g/mL=\frac{\text{Mass of water}}{40.0mL}\\\\\text{Mass of water}=(1g/mL\times 40.0mL)=40.0g

When metal is dipped in water, the amount of heat released by lead will be equal to the amount of heat absorbed by water.

Heat_{\text{absorbed}}=Heat_{\text{released}}

The equation used to calculate heat released or absorbed follows:

q=m\times c\times \Delta T

q = heat absorbed by water

m = mass of water = 40.0 g

T_{final} = final temperature of water = 20.0°C

T_{initial = initial temperature of water = 17.0°C

c = specific heat of water= 4.186 J/g°C

Putting values in equation 1, we get:

q=40.0\times 4.186\times (20.0-17.0)]

q=502J

Hence, the joules of heat were re-leased by the lead is 502

5 0
3 years ago
Ca(s)+2hno3(aq)→ca(no3)2(aq)+h2(g) identify the oxidizing agent.
aleksandr82 [10.1K]

To find for the oxidizing agent, first let us write the half reactions of this complete chemical reaction:

Ca = Ca2+ + 2e- <span>
2 H+ + 2e- = H2</span>

 

The oxidizing agent would be the substance of the element that is reduced. We know that an element is reduced when an electron is added to it. In this case, the element being reduced is H. Therefore the oxidizing agent is HNO3.

 

Answer:

<span>HNO3</span>

8 0
3 years ago
Read 2 more answers
Which formula represents an ionic compound?
kumpel [21]
When 2 elements are combined it creates an ionic compound
7 0
3 years ago
Read 2 more answers
A mixture of gases has 0.3000 mol of CO2, 0.2706 mol of SO2 and 0.3500 mol of water vapor. The total pressure of the mixture is
notka56 [123]

Answer:

Partial pressure SO₂ → 0.440 atm

Explanation:

We apply the mole fraction concept to solve this:

Moles of gas / Total moles = Partial pressure of the gas / Total pressure

Total moles = 0.3 moles of CO₂ + 0.2706 moles of SO₂ + 0.35 moles H₂O

Total moles = 0.9206 moles

Mole fraction SO₂ = 0.2706 moles / 0.9206 moles → 0.29

Now, we can know the partial pressure:

0.29 = Partial pressure SO₂ / Total pressure

0.29 = Partial pressure SO₂ / 1.5 atm

0.29 . 1.5atm = Partial pressure SO₂ → 0.440 atm

8 0
3 years ago
Other questions:
  • Water molecules contain what type of bonds
    5·2 answers
  • The chemical and physical process that change things over time are called
    6·1 answer
  • What are the signs of a chemical reaction?
    8·1 answer
  • An electromagnetic wave that has a higher frequency than ultraviolet light will have ___ than the ultraviolet light. A. Longer w
    13·1 answer
  • Gravitational potential energy is a function of the _____ and the ________ of an object.
    12·1 answer
  • Can you please help me with these true and false questions thanks!
    8·1 answer
  • I) If 8.87g of As2O3 is used in the reaction and 5.33 g of As is produced, what is the percent
    14·1 answer
  • Limiting Reactant:
    7·1 answer
  • Of the three properties of colour, hardness, and reflectivity, which property or properties describe how a material interacts wi
    11·1 answer
  • Describe a method you could use to carry out paper chromatography.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!