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
Mrrafil [7]
3 years ago
12

What is the mass number for the element? Protons: 2 Neutrons: 1 Electrons: 2

Chemistry
1 answer:
vaieri [72.5K]3 years ago
8 0

Answer:  The Mass Number would be equal to 3

Explanation:

The mass number of a element is the total number of protons + neutrons found in the nucleus of a single atom . Since there is 2 protons and 1 Neutron 2+1 = 3. Therefore it equals 3

You might be interested in
Calculate the ΔHrxn for the following
Vesnalui [34]

Answer:

2 NO (g) → N2 (g) + O2 (g)

2 NOCl (g) → 2 NO (g) + Cl2 (g)

____________________________

2NOCl (g) ⟶ N2 (g) + O2 (g) + Cl2 (g)

ΔH = [90.3 kJ x 2 x -1] +  [-38.6 kJ x -1 x 2] = -103.4 kJ

The ΔH for the reaction is -103.4 kJ

6 0
3 years ago
which one of these is caused by gravity? A. frost wedging. B. mass wasting. C. Aeolian bands. D. Glaciation
AlladinOne [14]
If I remember correctly, the answer is A
7 0
4 years ago
Read 2 more answers
Which organisms in this food web are carnivores? Select the two correct
LUCKY_DIMON [66]

The two correct options are Poison dart frog and Boa constrictor. Both these organisms are pure carnivores which are also known as pure meat eaters in the food web. Carnivores are organisms in the food chain that only meat-eaters and never take any type of vegetation in their diet.

Explanation:

  • A Poison dart frog purely survives on meat (meat- eater).
  • Long sticky tongues are used to catch their prey such as ants, flies, insects.
  • Since they produce high toxin levels, it has very few predators in the wild.
  • Boa constrictor is also an organism that eats only meat.
  • While they are young they eat prey like rats, squirrels and mice.
  • The type of attack used by a boa constrictor is an ambush attack type. It attacks its preys using the surprise factor.

6 0
4 years ago
Miles and pounds are use in which systems?
lisabon 2012 [21]

Answer:

The United States customary system aka USCS or USC?

4 0
3 years ago
A solid sample of a compound and a liquid sample of the same compound are each tested for electrical conductivity. which test co
marshall27 [118]
If these are you choices: 
(1)  Both the solid and the liquid are good conductors.

(2)  Both the solid and the liquid are poor conductors.

(3)  The solid is a good conductor, and the liquid is a poor conductor.

(4)  The solid is a poor conductor, and the liquid is a good conductor. 

 Then the answer is number 4. This is because ionic compound conducts electricity when it is dissolved in water.

8 0
4 years ago
Other questions:
  • Students place 650 milliliters of water into the water bottle. Convert 650 milliliters to liters.
    11·1 answer
  • Would it be easier or more difficult (compared to zinc) to recover silver from solution? explain
    9·1 answer
  • What holds combinations of atoms together in molecules? protons and electrons atomic magnetism chemical bonds nuclear forces?
    15·2 answers
  • What is the molecular formula of eggs?
    13·1 answer
  • A sentence using the term pseudoscience
    6·1 answer
  • Is smoke a element, compound , heterogenous mixture or a solution??
    10·2 answers
  • Which of the statements regarding alcohols and ethers are true? 1-Propanol is more likely to be a liquid at 50 °C50 °C than is m
    12·1 answer
  • Can renewable energy <br> be used again and again?
    15·1 answer
  • What is the mass percentage of JUST water in the hydrate CuSO4 ∙5H2O? The molar mass for the whole compound is 249.71 g/mol.
    14·1 answer
  • If I have 0.070 moles of gas at a pressure of 0.20 atm and at a temperature of 8.00°C,
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!