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
dexar [7]
2 years ago
14

Which of the following methods can be used to identify the suspected use of heat lamps in a house without entering the house?

Chemistry
1 answer:
LuckyWell [14K]2 years ago
7 0

Answer:

b I see some of ask you to do it

You might be interested in
What is another element that will have the same valence electrons as Be and Ca?
Oduvanchick [21]
Another element maybe BeCa if you combine them
8 0
2 years ago
Draw structures from the following names, and determine which compounds are optically active:(b) 3-chloro-2,2,5-trimethylhexane
inn [45]

The given compound 3-chloro-2,2,5-trimethylhexane is an optically active compound .

Because this compound does not have plane of symmetry (POS) and center  of symmetry (COS) i.e. does not have di-symmetry . And also forms non superimposable mirror image . the compound is optically active .

It has  chiral center.

Here the chiral carbon has 4 distinct groups such as : chlorine , hydrogen , 2-methylpropyl , tertbutyl .

<h3>What is di-symmetry?</h3>

Di-symmetry is that which have no center of symmetry and plane of symmetry and alternate axis of symmetry .

<h3>Chiral center :</h3>

Have Sp3 hybridized center (4sigma bond ) .

4 distinct group  is attached to the chiral atom. form non -superimposable mirror image .

<h3>What is optical isomerism ?</h3>

Same molecular formula and same structural formula . also have same physical and chemical properties .

They differ in their behavior towards plane polarized light (ppl) .

Learn more about chiral center here:

brainly.com/question/9522537

#SPJ4

7 0
1 year ago
One way of obtaining pure sodium carbonate is through the decomposition of the mineral trona, Na3(CO3)(HCO3)·2H2O. 2Na3(CO3)(HC
Leviafan [203]

Answer:

a. 92.4%

Explanation:

Based on the reaction:

2Na₃(CO₃)(HCO₃)·2H₂O(s) → 3Na₂CO₃(s) + CO₂(g) + 5H₂O(g)

To obtain the percent yield you need to obtain moles of trona and calculate thoeretical moles of Na₂CO₃, and the ratio of obtained moles / theoretical moles of Na₂CO₃ give percent yield, thus:

Moles of trona:

1.00 metric ton × (1x10³kg / 1 metric ton) × ( 1000moles /226.03 kg) = <em>4424 moles</em>

The theoretical moles of Na₂CO₃ that produce 4424 moles of trona are (Based on the reaction, 2 moles of trona produce 3 moles of Na₂CO₃):

4424 moles trona × (3 moles Na₂CO₃ / 2 moles trona) = <em>6636 moles of Na₂CO₃.</em>

The obtained moles of Na₂CO₃:

0.650 metric ton × (1x10³kg / 1 metric ton) × (1000 moles / 105.99kg) = <em>6133 moles</em>

The ratio of obtained moles / theoretical moles gives:

6133 moles / 6636 moles = 0.924 = <em>92.4%</em>

I hope it helps!

8 0
3 years ago
Give the reason for the evaporation of the solution to dryness with 6 m hcl in the first procedure of the copper-arsenic group a
SCORPION-xisa [38]
<span>
Evaporation occurred between the reaction of the hydrochloric acid and the arsenic group because there is a formation of gas. A liquid is cooled if condensation exceeds evaporation. This is because the cooling of the liquid decreases the kinetic energy of the molecules. Their movement is being restricted by the colder temperature. The molecules tend to be closer with each other. Also, because of their restricted movement, the liquid may turn into solid due the colder temperature. An example of this is the cooling of liquid water by placing it into the refrigerator into solid water (ice).</span>
4 0
3 years ago
Hey guys please help me
Anvisha [2.4K]

Answer:

Water will move out of the eggplant cells and the cells will shrink.

Explanation:

I found it on a Quizziz.

6 0
2 years ago
Other questions:
  • Correct answer to this easy question gets brainliest
    15·2 answers
  • Balance the following reaction: CH4 + O2→ CO2 + H2O<br> 46 points
    14·2 answers
  • 150.0 grams of AsF3 were reacted with 180.0 g of CCl4 to produce AsCl3 and CCl2F2. The theoretical yield of CCl2F2 produced, in
    11·1 answer
  • HELP PLEASE I GIVE 15 POINTS +++ BRAINLIEST!!!!!!!
    14·1 answer
  • Why must ionic compound have a total charge of 0?
    9·1 answer
  • Jamal draws the circuit diagram shown.
    8·1 answer
  • Describe the processes of abrasion and plucking and how they result in the formation of a glacial horns.
    8·2 answers
  • Someone pls help me I will mark you as brain
    7·1 answer
  • If the mass of an object increases, how is the force of gravity effected?<br><br> PLSSSSSSS
    9·1 answer
  • A lead apron is a ________________ instrument classification of disease transmission. Fill in the blank
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!