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
NeTakaya
4 years ago
5

A student places a beaker on a hot plate. To the beaker, he adds a clear liquid and a white powder. The mixture instantly begins

to bubble. He concludes that a chemical reaction has occurred. Do you agree with his conclusion? Why or why not? Please explain.
Chemistry
2 answers:
Elenna [48]4 years ago
7 0
True, because if it wasn't a chemical reaction it would have proceeded to stay the same. but it begins to bubble.
sorry if this isn't the best answer I'm trying my best.
emmainna [20.7K]4 years ago
7 0
Yes, the bubbling of the solution means a gas is being created, which is proof of a chemical reaction
You might be interested in
2. 27.8 mL of an unknown were added to a 50.0-mL flask that weighs 464.7 g. The total mass of the flask and the liquid is 552.4
agasfer [191]

Answer:

d=4.24x10^{-4}\frac{lb}{in^3}

Explanation:

Hello there!

In this case, according to the given information, it turns out firstly necessary for us to set the equation for the calculation of density and mass divided by volume:

d=\frac{m}{V}

Thus, we can find the mass of the unknown by subtracting the total mass of the liquid to the mass of the flask and the liquid:

m=552.4g-464.7g=87.7g

So that we are now able to calculate the density in g/mL first:

d=\frac{87.7g}{27.8mL}=3.15g/mL

Now, we proceed to the conversion to lb/in³ by using the following setup:

d=3.15\frac{g}{mL}*\frac{1lb}{453.6g}*\frac{1in^3}{16.3871mL}\\\\d=4.24x10^{-4}\frac{lb}{in^3}

Regards!

6 0
3 years ago
Why do atoms gain or lose electrons?
Aleksandr [31]

Answer:kapil

Explanation:

Atoms lose electrons, if an electron gets more energy than then binding energy of the electron. This may be because of a collision with a charged particle or because of absorbtion of a photon. In a metal, there are just other positive charges nearby. The electron is not lost, but shared.

6 0
3 years ago
Diatomic oxygen has a molar mass 16 times that of diatomic hydrogen. The root-mean-square speed vrms for diatomic oxygen at 50∘C
trapecia [35]

Answer:(16)(2000)m/s=32000m/s

Explanation: A diatomic oxygen has a molar mass of 16

8 0
3 years ago
It didn't have science but it is a science question. The average, year-after-year conditions of temperature, precipitation, wind
larisa86 [58]
Hey there,

Question : <span>The average, year-after-year conditions of temperature, precipitation, winds, and cloud in an area are known as its?

Answer : A, climate

Hope this helps :))

<em>~Top♥</em>
</span>
6 0
3 years ago
Please help me, Thank you!
babymother [125]

Answer:

amount of charge

Explanation:

Oxygen and sulfur are both in Group 16, which means they have a -2 charge. They have two more electrons than protons, making the charge of the ion negative.

Hope that helps.

4 0
3 years ago
Read 2 more answers
Other questions:
  • How do you test a hypothesis using scientific inquiry
    8·1 answer
  • If I have 72 liters of argon gas held at a pressure of 3.4 atm and a temperature of 225k how many grams of argon do I have
    15·1 answer
  • Which method would increase the solubility of a gas?
    5·2 answers
  • What is the molar mass of a substance
    5·2 answers
  • A voltaic cell utilizes the following reaction: 4Fe2+(aq)+O2(g)+4H+(aq)→4Fe3+(aq)+2H2O(l). What is the emf of this cell under st
    6·1 answer
  • How many moles of oxygen gas would be needed to completely burn 8 moles of<br> hydrogen sulfide?
    8·1 answer
  • Describe the atomic theory of atoms. How does this help us understand differences the three states of matter?
    8·1 answer
  • If the pressure of a gas is 2.000 × 104 kPa, what is its pressure in atm?
    10·2 answers
  • a volumetric pipette haas an uncertainty of 0.01 cm what are the lowest and highest possible volumes for a measurement of 0.20cm
    9·1 answer
  • What are the energy transformations in a fossil fuels power plant?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!