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
irinina [24]
3 years ago
13

Sahil watched a demonstration in which a scientist combined two substances in a sealed container and analyzed the results. The e

nding substances did not look the same as the starting substances.Sahil was given a diagram with the repeating groups of atoms that make up the starting substances, plus information about the properties of the starting and ending substances. He created a model of the repeating groups of atoms that might make up the two ending substances.Does his model correctly show why the properties of the ending substances are different from the properties of the starting substances? Describe what could be correct or incorrect about his model.

Chemistry
1 answer:
11111nata11111 [884]3 years ago
7 0

Answer:

amira's model correctly demonstrates how the properties changed with the rearrangement of the atoms. However not all atoms are accounted for. There is a missing reactant.

Explanation:

Samira's model correctly demonstrated how the atoms in two compounds reacted to form two new products. However, the elements present in the reactants side should be the elements that make up the new products in the product side. But as the diagram shows, Sameera has mistakenly added a new element to one of her products which will be wrong.

You might be interested in
Which pair of elements has reactivity that is similar to chlorine, Cl? F. Fluorine and Argon G. Fluorine and Iodine H. Sulfur an
kaheart [24]

halogens

Group 7A (or VIIA) of the periodic table are the halogens: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).

7 0
2 years ago
I need help with this :/
uranmaximum [27]
Ok please tell me what exactly you need help with

6 0
3 years ago
balance by oxidation number method<br />KMnO4 + Na2O₂ + H2 so4 ko2so4 +<br />Mosou4 + Na2so<br />4 + O2 + H₂O​
Katarina [22]

Answer:

8H2SO4 + 2KMnO4 + 5Na2O2 => 8H2O + 2MnSO4 + 5Na2SO4 + 5O2 + K2SO4

have:

Explanation:

6 0
2 years ago
One method used commercially to peel potatoes is to soak them in a solution of NaOH for a short time and then remove them from t
sergij07 [2.7K]

Answer:

b. 2.28 M

Explanation:

The reaction of neutralization of NaOH with H2SO4 is:

2NaOH + H2SO4 → Na2SO4 + 2H2O

<em>Where 2 moles of NaOH react per mole of H2SO4</em>

<em />

To solve the concentration of NaOH we need to find the moles of H2SO4. Using the chemical equation we can find the moles of NaOH that react and with the volume the molar concentration as follows:

<em>Moles H2SO4:</em>

45.7mL = 0.0457L * (0.500mol/L) = 0.02285 moles H2SO4

<em>Moles NaOH:</em>

0.02285 moles H2SO4 * (2moles NaOH / 1 mol H2SO4) = 0.0457moles NaOH

<em>Molarity NaOH:</em>

0.0457moles NaOH / 0.020L =

2.28M

Right option:

<h3>b. 2.28 M</h3>
7 0
3 years ago
A plant uses energy from the Sun to make food. What kind of energy transformation is this?
Norma-Jean [14]
I'm pretty sure it's photosynthesis
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is thermal energy?
    8·1 answer
  • How does concentration affect reaction rate
    11·2 answers
  • Solve by a 1 variable equation -3(x-3)=x+9-4x
    10·1 answer
  • If 0.756L of gas exerts a pressure of 94.6kPa, what would the volume be at standard pressure (101.33kPa)?
    13·1 answer
  • Help me please !!!
    6·1 answer
  • A baker makes cheese by using a microorganism A. In order to make the process faster, he adds another
    6·1 answer
  • What is most often the case when an ocean plate converges with another plate?
    10·2 answers
  • 2 = 15 what would the expression 2 + 15 be equal to
    13·1 answer
  • What would be the effect on the boiling point if you decrease the pressure over a liquid?.
    12·1 answer
  • what kind of change does a substance undergo without altering the molecules or atoms that are present?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!