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
wariber [46]
3 years ago
5

A sample of an unknown liquid has a mass of 21.09 g, and a volume of 6.44 ML. What is the density of this liquid?

Chemistry
1 answer:
Olenka [21]3 years ago
6 0
Hey there!:

Mass = 21.09 g

Volume = 6.44 mL

Therefore;

Density = mass / Volume

Density = 21.09 / 6.44

Density = 3.274 g/mL
You might be interested in
What types of damage can wind cause?
Levart [38]

Answer:

Wind between 39-46 mph can cause branches and limbs to break, make it hard for cars to stay on the road wind between 47-54 can cause lighting difficulties, wind between the 60-78 can cause trees to uproot and damage.

Explanation:

3 0
3 years ago
Which of the following is the balanced equation for P + O2 → P2O5? Question 3 options: A) 4P + O2 → 2P2O B) P + 5O2 → 2P2O5 C) 4
Luden [163]

Given equation:

P + O2 → P2O5

In order for the equation to be balanced, the stoichiometry of the atoms of one kind on the reactant side must be equal to that on the product

Reactants                                            Products

P = 1                                                       P = 2

O = 2                                                     O = 5

The balanced equation would be:

4P + 5O2 → 2P2O5

Reactants                                            Products

P = 4                                                      P = 4

O = 10                                                    O = 10

Ans: D)


4 0
3 years ago
Read 2 more answers
I bet that outfit is made of Copper and Tellurium, because it is so ________.
Aleonysh [2.5K]

THE SYMBOLS!!!

CuTe

LOLOLOL

7 0
3 years ago
Read 2 more answers
Which of the following reactions could be an elementary reaction? 2 NO2(g) + F2(g) → 2NO2F(g) Rate = k[NO2][F2] H2(g) + Br2(g) →
podryga [215]

<u>Answer:</u> The correct answer is NO(g)+O_2(g)\rightarrow NO_2(g)+O(g);Rate=k[NO][O_2]

<u>Explanation:</u>

Molecularity of the reaction is defined as the number of atoms, ions or molecules that must colloid with one another simultaneously so as to result into a chemical reaction.

Order of the reaction is defined as the sum of the concentration of terms on which the rate of the reaction actually depends. It is the sum of the exponents of the molar concentration in the rate law expression.

Elementary reactions are defined as the reactions for which the order of the reaction is same as its molecularity and order with respect to each reactant is equal to its stoichiometric coefficient as represented in the balanced chemical reaction.

For the given reactions:

  • <u>Equation 1:</u> 2NO_2(g)+F_2(g)\rightarrow 2NO_2F(g);Rate=k[NO_2][F_2]

Molecularity of the reaction = 2 + 1 = 3

Order of the reaction = 1 + 1 = 2

This is not considered as an elementary reaction.

  • <u>Equation 2:</u>  H_2(g)+Br_2(g)\rightarrow 2HBr(g);Rate=k[H_2][Br_2]^{1/2}

Molecularity of the reaction = 1 + 1 = 2

Order of the reaction = 1+\frac{1}{2}=\frac{3}{2}

This is not considered as an elementary reaction.

  • <u>Equation 3:</u>  NO(g)+O_2(g)\rightarrow NO_2(g)+O(g);Rate=k[NO][O_2]

Molecularity of the reaction = 1 + 1 = 2

Order of the reaction = 1 + 1 = 2

This is considered as an elementary reaction.

  • <u>Equation 4:</u>  NO_2(g)+CO(g)\rightarrow NO(g)+CO_2(g);Rate=k[NO_2]^2

Molecularity of the reaction = 1 + 1 = 2

Order of the reaction = 2 + 0 = 2

In this equation, the order with respect to each reactant is not equal to its stoichiometric coefficient which is represented in the balanced chemical reaction. Hence, this is not considered as an elementary reaction.

Hence, the correct answer is NO(g)+O_2(g)\rightarrow NO_2(g)+O(g);Rate=k[NO][O_2]

3 0
3 years ago
A soccer player practices kicking the ball into the goal from halfway down the field the time it takes for the ball to get to th
Nataliya [291]
Velocity = 15 m/s

90/2 = 45 m
45/3 (seconds to reach) = 15 m 



5 0
3 years ago
Read 2 more answers
Other questions:
  • What temperature in degrees c is the freezing point of water?
    6·1 answer
  • Cobalt-60 is a strong gamma emitter that has a half- life of 5.26 yr. The co balt-60 in a radiotherapy unit must be replaced whe
    6·1 answer
  • In the chemical reaction: 2 NaCl (s) + Pb(NO3)2 (aq) ---&gt; 2 NaNO3 (aq) + PbCl2 (s), a student adds 2.5 grams of NaCl(s) to ex
    13·1 answer
  • Helppppppppp please please
    6·1 answer
  • Consider the general reversible reaction. Lower A upper A plus lower B upper B double-headed arrow lower C upper C plus Lower d
    8·1 answer
  • What type of reaction is 3 and 4 ?
    11·2 answers
  • A scientist observes that the electrical resistance of a superconducting material drops to zero when the material is cooled
    9·1 answer
  • If the molar mass of aluminum chloride was actually 400 g/mol, what would the molecular formula of aluminum chloride be?
    14·1 answer
  • Which of these is a primary characteristic used to describe a clastic sedimentary rock?
    13·1 answer
  • Rx: 0.4l of 65% kcl soln. in stock: 30% kcl and 80% kcl. How many ml of 80% kcl is required to fill the doctor's order?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!