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
Rudiy27
3 years ago
13

Calculate the area of a floor that is 1.5 × 103 m long and 2.2 × 102 m wide.

Chemistry
1 answer:
liubo4ka [24]3 years ago
8 0

Answer:

154.5+224.4=378.9m

Explanation:

You might be interested in
Bromothymol blue is an acid-base indicator that changes color around ph 7. adding a small amount of bromothymol blue to a basic
Ede4ka [16]
... in neutralization reactions, for example:

NaOH + HCl = NaCl + H₂O

2KOH + H₂SO₄ = K₂SO₄ + 2H₂O
6 0
3 years ago
Read 2 more answers
The yeast acted as a catalyst. Explain the purpose of a catalyst in a reaction
Anna71 [15]

Answer:

The catalyst speeds up the chemical reaction.

Explanation:

The process in which chemical reaction rate increases by addition of substance is termed as a catalyst. The chemical reaction happens faster when a catalyst is present because it gives an alternative reaction pathway with lower activation energy.

The catalyst usually forms a temporary intermediate that helps in regenerating the original catalyst in the cyclic process. Yeast when added in a mixture work as a catalyst and helps with chemical reaction.

5 0
3 years ago
Compare how entropy changes for the following two systems:
postnew [5]

System A undergoes an increase in entropy while system B undergoes a decrease in entropy.

Entropy is the degree of disorderliness of a system. The entropy of a system depends on the number of particles present in the system as well as the state of matter.

Entropy is increased when solid particles dissolve in water because more particles are produced thereby increasing the level of disorderliness in the system.

On the other hand, when vapor is condensed, the degree of disorderliness decreases as gases are converted to liquids.

Learn more: brainly.com/question/13146879

7 0
3 years ago
HELPPPPP!!!!
Margarita [4]

Answer:

sound waves travel.faster through materials that are more dense

8 0
3 years ago
Read 2 more answers
An unknown gas Q requires 2.67 times as long to effuse under the same conditions as the same amount of nitrogen gas. What is the
Misha Larkins [42]

Answer:

The correct answer is 199.66 grams per mole.

Explanation:

Based on law of effusion given by Graham, a gas rate of effusion is contrariwise proportionate to the square root of molecular mass, that is, rate of effusion of gas is inversely proportional to the square root of mass. Therefore,  

R1/R2 = √ M2/√ M1

Here rate is the rate of effusion of the gas expressed in terms of number of mole per uni time or volume, and M is the molecular mass of the gas.  

Rate Q/Rate N2 = √M of N2/ √M of Q

The molecular mass of N2 or nitrogen gas is 28 grams per mole and M of Q is molecular mass of Q and based on the question Q needs 2.67 times more to effuse in comparison to nitrogen gas, therefore, rate of Q = rate of N2/2.67

Now putting the values we get,  

rate of N2/2.67/rate of N2 = √28/ √M of Q

√M of Q = √ 28 × 2.67

M of Q = (√ 28 × 2.67)²

M of Q = 199.66 grams per mole

3 0
3 years ago
Other questions:
  • The density of a 22.0% by mass ethylene glycol (c2h6o2) solution in water is 1.04 g/ml . part a find the molarity of the solutio
    13·1 answer
  • PLEASE ANSWER
    6·1 answer
  • How do you find out how many protons,electrons, and neutrons an atom has?
    15·1 answer
  • this environment has lots of trees high tenpatures and high mumidity all year long which environment is this describing Grasslan
    15·1 answer
  • A person applies a force of 200 N over 1.5 m to a jack. The jack exerts a 1000-N force on a car a distance of 0.02 m. What is th
    11·1 answer
  • How many atoms are in 450 grams of Na₂SO₄?
    6·1 answer
  • Please help, will give brainliest
    11·1 answer
  • Question 1
    13·1 answer
  • Bob rides his horse 52 km in 3 hours 15 minutes. What is his average speed in kilometers per hour?​
    11·1 answer
  • Exposure to even small amounts of radiation may cause
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!