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
antiseptic1488 [7]
2 years ago
13

Calculate the average atomic mass of a

Chemistry
1 answer:
Vesna [10]2 years ago
6 0

Answer: 207.217 amu

Work:

203.973 amu *(0.014) = 2.855 amu

205.974 amu *(0.241) = 49.639 amu

206.976 amu *(0.221) = 45.741 amu

207.977 amu *(0.524) = 108.979 amu

2.855 + 49.639 + 45.741 + 108.979 = <em><u>207.217amu</u></em>

Explanation:

You might be interested in
All objects have mass<br> O True<br> O False
ludmilkaskok [199]
The answerrrrr is truw
7 0
2 years ago
N=4 has how many orbitals?
marin [14]

Answer:

n = 4 there are 16 orbitals

5 0
3 years ago
Which number represents an acidic pH, 4 or 9?
Leno4ka [110]

Answer:

pH 4 represents an acidic

5 0
3 years ago
A glow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produ
mina [271]

A glow stick will glow longer at lower temperatures than at room temperature, one can infer from the observation. Temperature and reaction time are the test variables.

We notice in this reaction that a glow stick stored in the freezer lights for a longer period of time than a glow stick stored at normal temperature. This implies that temperature affects how long a response lasts.

The most straightforward explanation for this observation is that glow sticks glow longer in colder temperatures than they do at room temperature; as a result, glow sticks kept in the freezer are observed to glow longer than glow sticks kept at room temperature.

To learn more about chemicals to the given link:

brainly.com/question/24600141

#SPJ4

6 0
2 years ago
When 3.0 kg of water is warmed from 10 °C to 80 °C, how much heat energy is needed?
Naddik [55]

Answer:

THE HEAT NEEDED TO CHANGE 3KG OF WATER FROM 10 C TO 80 C IS 877.8kJ OR 877,800 J.

Explanation:

Mass = 3.0 kg = 3 * 1000 = 3000 g

Initial temperature = 10 C

Final temperature = 80 C

Change in temperature = 80 - 10 = 70 C

Specific heat of water = 4.18 J/g C

Heat needed = unknown

Heat is the amount of energy in joules needed to change a gram of water by 1 C.

Heat = mass * specific heat * change in temperature

Heat = 3000 g * 4.18 J/g C * 70 C

Heat = 877 800 Joules

Heat = 877.8 kJ.

The heat needed to change 3 kg mass of water from 10 C to 80 C is 877,800 J or 877.8 kJ.

6 0
3 years ago
Other questions:
  • A certain metal alloy is composed of 10% tin, 16% antimony, and 74% lead. If you were to have 500 g of the alloy, how many grams
    7·1 answer
  • What is the volume of 1.9 moles of chlorine gas (Cl2) at standard temperature and pressure (STP)?
    9·2 answers
  • 2H20(l) —&gt; 2H2(g) + O2(g)<br><br> help me pls
    9·1 answer
  • A cube has sides of 11.4 cm. What is its volume?
    11·1 answer
  • When 2.00 kJ of energy is transferred as heat to nitrogen in a cylinder fitted with a piston with an external pressure of 2.00 a
    5·1 answer
  • Name the types of radiation known to be emitted by radioactive elements.
    8·1 answer
  • When an acetic acid solution is titrated with sodium hydroxide, the slope of the titration curve (pH versus volume of NaOH added
    13·1 answer
  • A 5 g sample of pure gold has a density of 19.3 g/ml. Your friend purchased a gold ring that was made of 25 g of pure gold. What
    15·2 answers
  • Where do flowers come from? They are made through the process of sexual reproduction. Flowers may look simple, but there are act
    14·2 answers
  • Please help and thank you
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!