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
mariarad [96]
3 years ago
13

• 1. An object has a mass of 570g and a volume of 2280ml. Calculate its density. 250 kg/m3

Chemistry
1 answer:
Dima020 [189]3 years ago
7 0

Answer:

Density=mass/volume

= 570/2280

=0.25g/ml

You might be interested in
Which horizon has the least weathered rocks? How do you know?
ollegr [7]

Answer:

C: The C horizon is a subsurface horizon. It is the least weathered horizon. Also known as the saprolite, it is unconsolidated, loose parent material. The master horizons may be followed by a subscript to make further distinctions between differences within one master horizon.

Explanation:

4 0
3 years ago
The formula HCl stands for ____.
serious [3.7K]
HCl :

hydrochloric acid

answer A

hope this helps!
7 0
2 years ago
1. A gas having the following composition is burnt under a boiler with 50% excess air.
jeka94

The composition of the stack gas are :

CH_4= 0.8713

C_3H_8 = 0.0202

CO = 0.107

<h3 /><h3>What is a mole fraction?</h3>

The ratio of the number of moles of one component of a solution or other mixture to the total number of moles representing all of the components.

Assuming 100 g of the stack gas. Calculate the mass of each species in this sample according to their percentages.

Mass of CH_4 : 70% of 100 g = 70 g

Mass of C_3H_8 : 15% of 100 g = 15 g

Mass of CO : 15% of 100 g = 15 g

Now calculate the number of moles of each species:

Number of moles of CH_4 : \frac{70 g}{16.04 g/mol} = 4.3 mole

Number of moles of C_3H_8: \frac{15 g}{144.1 g/mol} = 0.10 mole

Mass of CO : \frac{15 g}{28.01 g/mol} = 0.53 mole

Now to calculate the mole fraction of each we use the formula:

Mole fraction of CH_4: \frac{4.3}{4.935} = 0.8713

Mole fraction of C_3H_8 : \frac{0.10}{4.935} = 0.0202

Mole fraction of CO : \frac{0.53}{4.935} = 0.107

Hence, composition of the stack gas are:

CH_4 = 0.8713

C_3H_8 = 0.0202

CO = 0.107

Learn more about mole fraction here:

brainly.com/question/13135950

#SPJ1

8 0
2 years ago
The enthalpy of neutralization for the reaction of a strong acid with a strong base is −56 kJ/mol of water produced. How much en
denis23 [38]

Answer:

mxmxmxmxmxmxmxnxnsjjsjsjsjs

kskskw

Explanation:

msmsjsjdjdj

make

wokskwkwkwkwjjejesjsjjsjwjwj

6 0
2 years ago
What would happen if the Earth was tilted at 45⁰ rather than 23.5⁰?
denis23 [38]

Answer:

it would cause global warming

Explanation: hope this helps

4 0
3 years ago
Other questions:
  • What is every cell that contains certain structures that perform specialized functions
    9·1 answer
  • A reaction progress curve has three peaks and two valleys between the peaks. this curve describes a reaction mechanism that invo
    7·1 answer
  • How did lavoisier revolutionize the science in chemistry
    13·1 answer
  • Glucose is a product of photosynthesis. where do the carbon atoms in glucose come from?
    15·2 answers
  • HELPPPPPP! PLEASE ASAPPPPPPPPPPPP!?
    6·1 answer
  • Plz someone help me i dont get this and i need to finish this
    5·1 answer
  • Which one of the following is NOT a characteristic of living things. *
    11·1 answer
  • What kind of waves do light waves travel in and how do they move
    15·1 answer
  • The picture shows two containers filled with a gas.
    8·1 answer
  • Sulfur has four naturally occurring stable isotopes. The one with the lowest mass number is sulfur-32, which is also the most ab
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!