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
dolphi86 [110]
3 years ago
12

What is the most important use of an elements atomic number

Chemistry
1 answer:
Setler [38]3 years ago
8 0

Answer:

Atoms of each element contain a characteristic number of protons and electrons. The number of protons determines an element's atomic number and is used to distinguish one element from another.

You might be interested in
A force of 100 newtons is applied to a box at an angle of 36º with the horizontal. If the mass of the box is 25 kilograms, what
notka56 [123]

Answer:

a_x=4.944m/s^2

Explanation:

Hello,

Based on the acting force that is applied horizontally, one can propose the following equation based on Newton's laws:

F=ma

Nevertheless, since we've got a angled force, it becomes:

F=macos\theta

In this case, cos\theta accounts for the formed angle, so the horizontal acceleration turns out into:

a_x=\frac{F}{mcos\theta}=\frac{100kg*\frac{m}{s^2} }{25kgcos(36^0)}=4.944m/s^2

Best regads.

5 0
3 years ago
Write a balanced chemical equation for the reaction that occurs when calcium metal undergoes a combination reaction with O2(g)?
ivann1987 [24]
When calcium joins with calcium its follows the following equation:

2Ca + O2 = 2CaO

hope that helps 

8 0
3 years ago
The freezing point of a substance is -20°C. Its boiling point is 120°C.
Tasya [4]

Answer:

a. liquid

b. solid

c. gas, (should be at it's boiling point)

Explanation: If the normal melting point of a substance is below room temperature, the substance is a liquid at room temperature. Benzene melts at 6°C and boils at 80°C; it is a liquid at room temperature. If both the normal melting point and the normal boiling point are above room temperature, the substance is a solid.

if you need an explanation to each lmk

8 0
3 years ago
A sample of gas has a volume of 2.36 L at a temperature of 53.00 °C. The gas sample is heated to a temperature of 139.00 °C (ass
Liono4ka [1.6K]

Answer:

The volume increases because the temperature increases and is 2.98L

Explanation:

Charles's law states that the volume of a gas is directely proportional to its temperature. That means if a gas is heated, its volume will increase and vice versa. The equation is:

V₁/T₁ = V₂/T₂

<em>Where V is volume and T is absolute temperature of 1, initial state, and 2, final state of the gas.</em>

In the problem, the gas is heated, from 53.00°C (53.00 + 273.15 = 326.15K) to 139.00°C (139.00 + 273.15 = 412.15K).

Replacing in the Charles's law equation:

2.36L / 326.15K= V₂/412.15K

<h3>2.98L = V₂</h3>

<em />

5 0
3 years ago
Halp pls halppppppppppppppppppppppp
ira [324]
Delete the cactus and the tree on the right for the first one and the third picture delete the lion moose Buffalo
8 0
3 years ago
Read 2 more answers
Other questions:
  • Give the chemical symbol for each of the following elements
    7·1 answer
  • An ion with an atomic number of 34 and 36 electrons has a __________ charge
    14·1 answer
  • Is Italian salad dressing a pure substance or a mixture ?
    9·1 answer
  • What heat is liberated in the formation of 10.0 grams of sulfur hexafluoride, SF6, from the elements sulfur and fluorine?
    6·1 answer
  • 8 DO
    8·1 answer
  • The colourless coating on a photographic film contains a chemical substance which reacts upon exposure to light, causing the fil
    5·1 answer
  • What is the mass of 10.28 moles of fluorine
    13·1 answer
  • What is the Kc and Kp of <br>P4(s)+6Cl2(g) = 4PCla-​
    8·1 answer
  • Where do molecules humans need come from
    12·1 answer
  • Nguyên tử của nguyên tố X ở chu kỳ 3 có tỉ lệ electron trên phân lớp s và p là 6/11. Nguyên tố Y ở chu kỳ 4 nhóm A có tỉ lệ elec
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!