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
Svet_ta [14]
3 years ago
5

According to Dalton, if 2 grams of element X combine with 4 grams of element Y to form compound XY, how many grams of element X

would combine with 28 grams of element Y to form the same compound? A. 14 B. 28 C. 7 D. 56
Chemistry
1 answer:
adell [148]3 years ago
8 0
The ratio of reactant in grams would be influenced by the reaction equation and the molar mass of the elements. But the ratio of a reactant needed in grams would be same for a reaction.
If 2 grams of element X combine with 4 grams of element Y to form compound XY, it means the ratio of reactant in grams<span> would be 2:4 or 1:2

The number of element X needed for 28grams of element Y would be:
1/2 * 28grams = 14 grams.</span>
You might be interested in
Where two air masses and do not mix
yulyashka [42]
When two air masses meet together, the boundary between the two is called a weather front. At a front, the two air masses have different densities, based on temperature, and do not easily mix. One air mass is lifted above the other, creating a low pressure zone.
3 0
3 years ago
Identify the precipitate that forms (if any) when aqueous solutions of barium nitrate and sodium sulfate are mixed.
Alborosie

The precipitate that forms when aqueous solutions of barium nitrate and sodium sulfate are mixed is barium sulphate.

Barium Nitrate is a colorless to white, odorless, crystalline powder. It is used in making fireworks, for green lights and neon lights, and in ceramic glazes.

Sodium Sulfate Anhydrous is the anhydrous, sodium salt form of sulfuric acid. Sodium ion is the principal cation of the extracellular fluid and plays a large part in the therapy of fluid and electrolyte disturbances.

When aqueous solutions of barium nitrate and sodium sulfate are mixed is barium sulphate, one soluble salt, sodium nitrate, and an insoluble salt, barium sulphate.

Learn more about barium nitrate, click here brainly.com/question/9597126

#SPJ4

4 0
1 year ago
If you dilute 250 mL of 6.4 M lithium acetate solution to a volume of 750 mL, what will the concentration of this solution be?
Tresset [83]
The answer would be 1006.4
3 0
3 years ago
You have selected your two primers and added all of the PCR components to a test tube. Use the answer choices [A-C] to explain w
tankabanditka [31]

Hi. You did not provide any response options. However, a PCR reaction proceeds as follows.

After the primers are added to the test tube containing the PCR components. This tube is placed in a device called a thermocycler. At that moment, the stage called denaturation will begin, where the thermocycler increases the temperature to the point of breaking the hydrogen bonds that hold the two strands of DNA together. The thermal cycler increases the temperature up to 96°C.

After that, the second step of the reaction begins. At that moment, the thermal cycler lowers the temperature to 55º - 65ºC, which is the ideal temperature for the primers to be able to attach themselves to the DNA strands, preparing them for the presence of the polymerase.

After that, the thermocycler raises the temperature to 72ºC, which is the ideal temperature for the DNA polymerase to work. At this stage, the DNA polymerase will use the DNA strand and the primer to build a new DNA strand, which will be annealed to the DNA strand used as a template.

These three steps will be repeated about 35 times, generating many copies of DNA.

7 0
3 years ago
\al(s) + 3agno3(aq) → al(no3)3(aq) + 3ag(s) this equation represents which type of chemical reaction?
Savatey [412]
 Al(s)  + 2AgNO3(aq) = Al(NO3)3(aq) + 3 Ag (s) 


is a  single  replacement reaction

 A  single  replacement  reaction  is a type  of chemical reaction were element react with a compound  and  the element take  place  of another element in that  compound.  In the reaction above Aluminium  (Al) take the place of  silver (Ag)  from it compound.that is AgNO3. single  replacement reaction is possible because  aluminium   is  in high in reactivity   series    as compared to silver.
3 0
3 years ago
Other questions:
  • How many molecules are in 1.95 moles of water?
    12·2 answers
  • Part b - the effect of an electric field (voltage) on a negatively charged oil droplet in the millikan oil droplet experiment, t
    9·1 answer
  • What do atoms of any single element have in common
    7·2 answers
  • Which of the following is not an effect of acid rain? a. Corrosion of buildings c. Limestone corrosion b. Reduced cold tolerance
    15·1 answer
  • The Earth experiences an ice age when the overall climate becomes much cooler. During an ice age, there are several periods of g
    11·2 answers
  • What is the definition of bond (in chemistry) ?
    5·2 answers
  • ANSWER IF U LOVE UR MOM PLS
    7·2 answers
  • An animal is an example of a/an-<br><br> A: tissue <br> B:cell type<br> C:organ<br> D:organism
    6·2 answers
  • How many particles are in 2.0 moles of CH4
    14·2 answers
  • I NEED HELP ASAP!!!!!!!!!!!<br> WITHIN THE HOUR<br> Thanks
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!