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
xxMikexx [17]
3 years ago
12

Which of the following materials could have been found in the giant cloud that formed the

Chemistry
1 answer:
Natalija [7]3 years ago
4 0

Hydrogen and helium

These are the lightest atoms in the universe and are at the top-most of the periodic table.

Explanation:

These hydrogen and helium gas clouds when the collapse due to their own gravity, begin to fuses producing fusion energy that form stars. These light atoms become fused into heavier atoms in the center of these stars. When hydrogen and helium are fused, they form heavier atoms like those of carbon and oxygen. Supermassive stars, with intense gravity, will fuse even the heavier atoms like carbon into even heavier elements like Iron.

Learn More:

For more on fusion check out;

brainly.com/question/11498700

brainly.com/question/12201864

#LearnWithBrainly

You might be interested in
Who often does galeras erupt
Genrish500 [490]

Answer:

Galeras has erupted more than 20 times since the 1500s. Volcanic activity has been frequent in the last five years, including an eruption in January 1993 that killed nine people on a scientific expedition to the volcano summit. Chuck Wood of VolcanoWorld was on Galeras at that time but was not injured

Explanation:

4 0
3 years ago
Read 2 more answers
How many significant figures are in each of the following measurements? (c) 0.03003 kg (f) 3.8200 x 103 L (a) (d) 0.00450 m 35.0
erica [24]

Answer:

c =four significant figures = 3003

f = Four significant figures = 3820

d =(i) three significant figures = 450

d =(ii) Six significant figures  = 35.0445

b = significant figures = 59.0001

e = five significant figures = 67000

Explanation:

c = 0.03003 kg

four significant figures = 3003

f = 3.8200 × 10³ L

Four significant figures = 3820

d =(i) 0.00450 m and (ii) 35.0445 g

(i) three significant figures = 450

(ii) Six significant figures  = 35.0445

b = 59.0001 cm

six significant figures = 59.0001

e = 67000

five significant figures = 67000

The given measurement have five significant figures 41006. this measurement can be rounded to three significant figures i.e, 0.410 g.

All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.

Leading zeros are not consider as a significant figures. e.g. 0.03 in this number only one significant figure present which is 3.

Zero between the non zero digits are consider significant like 104 consist of three significant figures.

The zeros at the right side e.g 2400 are also significant. There are four significant figures are present.

8 0
3 years ago
If 20.0 mL of glacial acetic acid (pure HC2H3O2HC2H3O2) is diluted to 1.70 L with water, what is the pH of the resulting solutio
Andreas93 [3]

Answer:

The answer to your question is pH = 0.686

Explanation:

Data

Acetic acid = 20 ml

Final volume = 1.7 L

pH = ?

density = 1.05 g/ml

Process

1.- Calculate the mass of acetic acid

density = mass / volume

mass = density x volume

mass = 1.05 x 20

mass = 21 g

2.- Calculate the moles of acetic acid (CH₃COOH)

Molar mass = (12 x 2) + (16 x 2) + (4 x 1)

                   = 24 + 32 + 4

                   = 60 g

                 60 g of acetic acid ---------------- 1 mol

                 21 g of acetic acid ----------------- x

                 x = (21 x 1) / 60

                 x = 0.35 moles

3.- Calculate the concentration

Molarity = 0.35 moles / 1.70 L

              = 0.206

4.- Calculate the pH

pH = -log[0.206]

pH = 0.686

6 0
3 years ago
How many miles of C5H12 are there in 362.8 grams of the compound?
Dmitry_Shevchenko [17]

Answer:

5.03 moles

Explanation:

Find the molar mass of C5H12 and you will get 72.17 g/mol

Next to find the number of moles, you divide 362.8 by the molar mass and you get

(362.8 g)/(72.17 g/mol)= 5.03 moles

3 0
3 years ago
Which compound has the highest melting point?
andrey2020 [161]

Option one ( which is Aluminium Carbonate ) is the answer

3 0
3 years ago
Other questions:
  • Object a has a mass of 12 grams and a density of 3 grams centimeters cubed object B has a mass of 12 grams and a density of 5 gr
    6·1 answer
  • The energy released by a nuclear reaction results primarily from the
    14·2 answers
  • Which element has the highest standard reduction potential? fluorine hydrogen lead lithium
    6·2 answers
  • What would a substance that could undergo condensation polymerization most likely have? two double bonds a triple bond two aldeh
    14·2 answers
  • When an object is lifted 10 feet off the ground, it gains a certain amount of potential energy. If the same object is lifted 30
    7·1 answer
  • PLEASE HELP!! Tell me the IUPAC name of the following compounds:
    14·1 answer
  • Exercise A mixture of 250 mL of methane, CH4, at 35 °C and 0.55 atm and 750 mL of propane, C3Hg, at 35° C and 1.5 atm, were intr
    8·1 answer
  • Calculate the percent ionization of 1.60 M aqueous acetic acid solution. For acetic acid, Ka=1.8×10−5.
    8·1 answer
  • TRUST PLZ HELP MATCH THE BOXES
    11·1 answer
  • Which of the following causes wind?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!