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
Fed [463]
3 years ago
10

What is the mass number, symbol, and charge of an atom that contains 19 protons, 20 neutrons and 19 electrons?

Chemistry
1 answer:
Crazy boy [7]3 years ago
8 0

Answer:

Explanation:

mass number = 19 + 20 = 39 (protons + neutrons)

The charge is  0. This is an atom

The symbol = K

Protons: 19

Electrons: 19

Neutrons: 20

You might be interested in
A 1000-ml bag of d5w 1/2 ns is to infuse over 8 hours. what is the flow rate of the infusion?
AlladinOne [14]
1542 is the answer. : )
7 0
3 years ago
When body temperature rises during physical activity, which thermoregulatory response is stimulated?
navik [9.2K]

Answer: Heat dissipation mechanism

Explanation: Heat dissipation mechanism is a thermoregulatory response in humans whereby the hypothalamus of the brain initiates certain processes to reduce the high body temperature. Eg, sweating is initiated which helps cool down the body temperature, also superficial arteries are dilated, thereby leading to flushing and decreasing heatloss into the air. And metabolic heat production is also reduced.

8 0
3 years ago
At what temp will a gas be at if you allow it to expand from an original 456 mL to 65°C to 3.4 L
alexira [117]
We use the gas law named Charle's law for the calculation of the second temperature. The law states that,
                                          V₁T₂ = V₂T₁
Substituting the known values,
                                (0.456 L)(65 + 273.15) = (3.4 L)(T₁)
                                             T₁ = 45.33 K
5 0
3 years ago
Read 2 more answers
Write a net ionic equation to show that hydroiodic acid, hi, behaves as an acid in water.
OlgaM077 [116]

Answer:

HI(aq) + H₂O(ℓ) ⟶ H₃O⁺(aq) + I⁻(aq)

Explanation:

The HI donates a proton to the water, converting it to a hydronium ion

HI(aq) + H₂O(ℓ) ⟶ H₃O⁺(aq) + I⁻(aq)

Thus, the HI is behaving like a Brønsted acid.

3 0
3 years ago
Read 2 more answers
Which of the following phase changes describes what is
stich3 [128]

Answer:

I think the answer is boiling

8 0
3 years ago
Other questions:
  • Which scenario describes a transfer of mechanical energy to heat and sound energy? Question 7 options: A) a very high pitched so
    6·1 answer
  • Identify the number of significant figures in each measurement. Type the correct answer in each box. Use numerals instead of wor
    15·2 answers
  • What causes climate change?
    13·2 answers
  • Which of the following can be mixed in solution with NH2 to make a buffer?
    15·2 answers
  • Apply the Law of Conservation of Mass to the following problem: During a combustion reaction, 12.2 grams of methane reacts with
    13·1 answer
  • What types of energy are involved in a chemical reaction?
    13·1 answer
  • Mercury may have ice trapped in the crater floors near the planet’s north pole.
    9·1 answer
  • PLEASE HELP PLEASE LLEASE HELP, WILL MARK BRAINLIEST!!!
    11·1 answer
  • How many atoms of fluorine are in 5.6×1022 molecules of MgF2?
    13·1 answer
  • By titration, it is found that 73.3 mL of 0.175 M NaOH(aq) is needed to neutralize 25.0 mL of HCl(aq). Calculate the concentrati
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!