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Olegator [25]
2 years ago
6

According to the big bang theory, which statement is accurate about how the universe came to be?

Chemistry
1 answer:
Lady bird [3.3K]2 years ago
8 0

Answer:

Stars and Galaxies formed

Explanation:

I'm pretty sure that this is the answer

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1. Does the temperature rise or drop when you mix vinegar and baking soda.
Viktor [21]

Answer:

Yes

Explanation:

In a chemical reaction heat is produced as a result of the reaction

3 0
3 years ago
Should Scientist be allowed to conduct stem cell research?
Citrus2011 [14]

Answer: Studying stem cells can help scientists understand more about how the body works and how disease develops and affects the body so yes

Explanation: Studying stem cells can help scientists understand more about how the body works and how disease develops and affects the body. Working with stem cells may help researchers better understand different diseases and conditions, and find new treatments.

7 0
3 years ago
Is fluorine a nonmetal or metal?
Ratling [72]

Answer:

Nonmetal...

Explanation:

T^T

6 0
3 years ago
Read 2 more answers
Aqueous sulfuric acid h2so4 will react with solid sodium hydroxide naoh to produce aqueous sodium sulfate na2so4 and liquid wate
Julli [10]
1) Balanced chemical equation

H2SO4 + 2NaOH ---> Na2 SO4 + 2H2O

=> 1 mol H2SO4 : 2 moles NaOH

2) Convert 89.3 g of H2SO4 and 96.0 g of NaOH to moles

Molar mass of H2SO4 = 98.1 g/mol

Molar mass of NaOH = 40.0 g/mol

moles = mass in grams / molar mass

moles H2SO4 = 89.3 g / 98.1 g/mol = 0.910 mol

moles NaOH = 96.0 g / 40.0 g/mol = 2.40 mol

3) Theoretical molar ratio = 2 moles NaOH / 1 mol H2SO4

So, all the 0.91 mol of H2SO4 will be consumed along with 1.820 (2*0.91) moles of NaOH, and 0.580 moles (2.40 - 1.82) of NaOH will be left over by the chemical reaction.

4) Convert 0.580 moles NaOH to mass

0.580 moles * 40.0 g/mol = 23.2 g of NaOH will be left over

6 0
3 years ago
a model of an atom shows eight electrons in rings that represent different energy levels. how many electrons are in each energy
vlada-n [284]

Answer:

1. four in the first energy level, four in the second energy level

2. eight in the first energy level, zero in the second energy level

3. zero in the first energy level, eight in the second energy level

4. two in the first energy level, six in the second energy level *

Explanation:

1. four in the first energy level, four in the second energy level

2. eight in the first energy level, zero in the second energy level

3. zero in the first energy level, eight in the second energy level

4. two in the first energy level, six in the second energy level *

4 0
3 years ago
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