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
vampirchik [111]
2 years ago
7

What is the mass of the steel block?

Chemistry
2 answers:
Rzqust [24]2 years ago
7 0

Answer:

190.2 grams

Explanation:

each arrow points to the amount it weighs, just add it all up

Tatiana [17]2 years ago
3 0

Answer:

190g

Explanation:

Using the scale, you can see that both arrows are over <em>100</em> and <em>90</em>. You simply add these integers together to get your answer. <em>100 + 90 = 190.</em> But don't forgot your units! If you don't add the <em>g</em>, the answer may be considered wrong. Good luck!

You might be interested in
Which of the following elements does NOT follow the standard election caliguration rules?
solong [7]

Answer:

C

Explanation:

Helium I did it before correct me if I'm wrong.

4 0
3 years ago
If 8.6 g of ch4 and 5.9 g of o2 react, what is the mass, in grams, of h2o that is produced?
Alenkasestr [34]
This may seem confusing because they give you two masses, but all you have to do is pick one to do the calculations. Personally, I would pick O2, since the molar mass is easier to calculate. The answer would be 3.3 g (rounded for sig figs). To get this, first take the 5.9 grams of O2 and convert it to moles by dividing by the molar mass of oxygen gas, which is 32. Then, multiply both by the mole-mole ratio, which is 2:2, or simply 1:1. After that, multiply that by 18g, which is the molar mass of water to get grams of water. 

REMEMBER, you have to write and balance the chemical equation before you can do any of that work. 
That happens to be CH4 + 2O2 => CO2 + 2H2O
7 0
3 years ago
Develop a demonstration to show how weight is not the same thing as mass
maksim [4K]

Answer with Explanation:

"Mass" and "weight" should never be used interchangeably with each other. Mass refers to the <u>total amount of matter</u><u> that can be measured in an object, </u>while weight refers to the<u> measure of the</u><u> force of gravity</u><u> that is acting on the object's mass.</u>

The mass of an object is<u> constant</u> (meaning, it doesn't change even if the object will be placed on another location) while the weight of an object relies on the <em>force of gravity.</em> So, this means that your mass on Earth and on the moon are identical, however, your weight on Earth and on the Moon are different. You will weigh lesser on the Moon because it has a lesser surface gravity than that of Earth.

So, this explains the answer.

4 0
3 years ago
A trial of this decomposition experiment, using different quantities of reactants than those listed in the question above produc
Paul [167]

Answer : The volume of O_2(g) produced at standard conditions of temperature and pressure is 0.2422 L

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of O_2 gas = (740-22.4) torr = 717.6 torr

P_2 = final pressure of O_2 gas at STP= 760 torr

V_1 = initial volume of O_2 gas = 280 mL

V_2 = final volume of O_2 gas at STP = ?

T_1 = initial temperature of O_2 gas = 25^oC=273+25=298K

T_2 = final temperature of O_2 gas = 0^oC=273+0=273K

Now put all the given values in the above equation, we get:

\frac{717.6torr\times 280mL}{298K}=\frac{760torr\times V_2}{273K}

V_2=242.2mL=0.2422L

Therefore, the volume of O_2(g) produced at standard conditions of temperature and pressure is 0.2422 L

5 0
3 years ago
What do all electrolytes have in common?
Lerok [7]
Your answer would be they have mobile ions in solution.
7 0
2 years ago
Other questions:
  • Must new substance before when you have a chemical property
    12·1 answer
  • a certain gas occupies 5 dm³ at 24 °C and 15 cm Hg. Calculate the pressure of the gas if the volume is halved and the temperatur
    7·1 answer
  • Enter the molecular formula for butane, C4H10.
    7·1 answer
  • Calculate the weight of one medium egg if a dozen medium eggs has an average weight of 21 ounces
    10·2 answers
  • The value of the atomic mass of an atom is?<br><br> please help!!
    10·2 answers
  • Given li2, c2, s2, and cl2, which of these species is paramagnetic? view available hint(s) g.com
    11·1 answer
  • 1)Explain why the overall charge of a nucleus positive ?
    13·1 answer
  • Which transfer of heat is depicted in the figure?
    7·1 answer
  • What are two natural and two man-made causes for sudden catastrophic change to an ecosystem
    8·1 answer
  • Which best describes why animals need the energy in food?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!