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
adoni [48]
3 years ago
5

Atomic emission spectra are unique to each element. true false

Chemistry
2 answers:
11111nata11111 [884]3 years ago
8 0
True, bc each element emits lights that have an unique wavelength and frequency
WARRIOR [948]3 years ago
3 0

Answer:

true

Explanation:

You might be interested in
Would you be able to fit a mole of rice in a 30.0m*8.5m*3.5m room??
Julli [10]

Answer:

No.

Explanation:

1. Volume of a rice grain

There is no standard for the size of a rice grain, so let's make an arbitrary assumption.

An average rice grain behaves as if it were a rectangular solid with dimensions 7 mm × 2 mm × 2 mm.

The volume of one rice grain is

V = lwh = 7 mm × 2 mm × 2 mm = 28 mm³

Convert to cubic metres :

V = \text{28 mm}^{3} \times \left (\dfrac{\text{1 m}}{\text{1000 mm}}\right )^{3} = \mathbf{2.8 \times 10^{-8}}\textbf{ m}^{\mathbf{3}}

2. Volume of the room

V = lwh = 30.0 m × 8.5 m × 3.5 m = 890 m³

3. Volume of a mole of rice  

V= 6.022 \times 10^{23}\text{ grains} \times \dfrac{2.8 \times 10^{-8}\text{ m}^{3}}{\text{1 grain }} = \mathbf{1.7 \times 10^{16}}\textbf{ m}^{\mathbf{3}}

4. Conclusion

The room is not big enough to hold a mole of rice.

If you work it out, you will find that it takes about

20 000 000 000 000 (twenty trillion) rooms to hold a mole of rice.

8 0
3 years ago
All atoms of the same element must have the same number of what?
torisob [31]

Answer:

A. protons

I hope this helps!

3 0
3 years ago
Read 2 more answers
How many lone pairs are on the central atom in GeH4?
Step2247 [10]
It shouldn't have any lone pairs since it is a tetrahedral structure. Ge has 4 valence electrons. Each H has 1 valence electron. Therefore, each H valence electron will pair with each valence electron on Ge.
7 0
3 years ago
Bună ziua, mă poate ajuta și pe mine cineva, spunândumi din ce substanțe este formată cărămida și care este formula
Ne4ueva [31]

Answer: De câte cărămizi am nevoie? Pentru un perete de cărămidă cu strat singular, înmulțiți lungimea peretelui cu înălțimea pentru a obține zona. Înmulțiți acea zonă cu 60 pentru a obține numărul de cărămizi de care ar trebui să aveți nevoie, apoi adăugați 10% pentru risipă. Acesta este răspunsul scurt și presupune dimensiuni „standard” de cărămidă și mortar.

5 0
3 years ago
What exactly is a proton? Is it a member of the periodic table?
Pavel [41]

The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).

4 0
3 years ago
Other questions:
  • It takes 5.2 minutes for a 4.0 g sample of francium-210 to decay until only 1.0 g is left. What is the half-life of francium-210
    10·2 answers
  • Enzymes are proteins that speed up chemical reactions in the body how do they work
    13·1 answer
  • How many grams of sucrose are in 1.80 of a 0.718 sucrose solution
    8·1 answer
  • Pleassseee ill mark brainliest Read the following passage and find the two errors. Then, choose the answer that corrects the err
    6·2 answers
  • Without calculation what is the approximate atomic mass of neon
    15·1 answer
  • Calculate the predicted density for calcium, ca, given the density of strontium, sr, (2.63g/cm3) and barium, ba, (3.65 g/cm3).
    8·1 answer
  • Arrange the elements in order of increasing electronegativity. Use the periodic table to help you arrange the elements.
    11·2 answers
  • Each turn of the citric acid cycle generates one ATP and ___ additional energy-rich molecules: __________. View Available Hint(s
    10·1 answer
  • Free points just replie and yea
    8·2 answers
  • A gas with a pressure of 820.4 mmHg occupies a
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!