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
djverab [1.8K]
3 years ago
10

In the periodic table we use today, the ordering of the elements is based on _____.

Chemistry
1 answer:
Firdavs [7]3 years ago
3 0
<span>The ordering of the elements is based on Atomic number. 
Atomic number is the number of protons inside the nucleus of an atom. 

Ordering is from left to right. Atomic number increases successively from left t</span>o right.
You might be interested in
Assume that a daily diet of 2000 calories (i.e. 8.37 x 106 J) is converted completely to body heat.
slava [35]

Answer:

(a) the mass of the water is 3704 g

(b) the mass of the water is 199, 285.7 g

Explanation:

Given;

Quantity of heat, H= 8.37 x 10⁶ J

Part (a) mass of water (as sweat) need to evaporate to cool that person off

Latent heat of vaporization of water, Lvap. = 2.26 x 10⁶ J/kg

H = m x Lvap.

m = \frac{H}{L._{vap}} =\frac{8.37 * 10^6.J}{2.26*10^6\ \frac{J}{kg}} = 3.704 \ kg

mass in gram ⇒ 3.704 kg x 1000g = 3704 g

Part (b) quantity of water raised from 25.0 °C to 35.0 °C by 8.37 x 10⁶ J

specific heat capacity of water, C, 4200 J/kg.°C

H = mcΔθ

where;

Δθ is the change in temperature = 35 - 25 = 10°C

m =\frac{H}{c* \delta \theta} = \frac{8.37 *10^6}{4200*10} = 199.2857 kg

mass in gram ⇒ 199.2857 kg x 1000 g = 199285.7 g

5 0
3 years ago
The chemical mixture that composes our atmosphere is called ________.
Virty [35]
Answer: Air

Hope this helps

3 0
3 years ago
9. At equilibrium a 2 L vessel contains 0.360
klio [65]

Answer:

Ke = 34570.707

Explanation:

  • H2(g) + Br2(g) → 2 HBr(g)

equilibrium constant (Ke):

⇒ Ke = [HBr]² / [Br2] [H2]

∴ [HBr] = (37.0 mol) / (2 L) = 18.5 mol/L

∴ [Br2] = (0.110 mol) / (2 L) = 0.055 mol/L

∴ [H2] = (0.360 mol) / (2 L) = 0.18 mol/L

⇒ Ke = (18.5 mol/L)² / (0.055 mol/L)(0.18 mol/L)

⇒ Ke = 34570.707

3 0
3 years ago
When does a lunar eclipse occur?​
cluponka [151]

Answer:

A partial lunar eclipse occurs when the Earth moves between the Sun and Moon but the three celestial bodies do not form a straight line in space. When that happens, a small part of the Moon's surface is covered by the darkest, central part of the Earth's shadow, called the umbra.

Explanation:

5 0
2 years ago
Read 2 more answers
Adding luminol to water creates a physical or chemical change ​
faust18 [17]
Answer: chemical

not 100% sure
7 0
3 years ago
Read 2 more answers
Other questions:
  • If you wanted to design an experiment to show that the solubility of sugar in tea varies according to the temperature, what vari
    12·2 answers
  • A green laser pointer emits light with a wavelength of 542 nm. What is the frequency of this light?
    15·1 answer
  • 10.9010 has how many significant figures
    10·2 answers
  • An atom is neutral because it has the same number of positively charged protons as<br> it has
    11·1 answer
  • For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4Al(s)+3O2(g)→2Al2O3(
    12·1 answer
  • What occurs as energy is transferred through a wave?
    9·1 answer
  • In the reaction __H2 + O2 → 2H2O, what coefficient should be placed in front of H2 to balance the reaction?
    5·2 answers
  • What mass of NaOH would need to be dissolved in 500.0 mL of water to produce a solution with a pH of 12.40
    12·1 answer
  • SHOW WORK
    13·1 answer
  • A water solution is found to have a molar oh- concentration of 3.2 x 10-5. the solution would be classified as :_______.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!