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Tatiana [17]
2 years ago
7

A student performs an exothermic reaction in a beaker and measures the temperature. If the thermometer initially reads 35 degree

s Celsius, what is a possible reading of the thermometer after the reaction? A. 35 degrees Celsius B. 0 degrees Celsius C. 45 degrees Celsius D. 25 degrees Celsius
Chemistry
1 answer:
Ksju [112]2 years ago
7 0

Answer:

C

Explanation:

Exothermic means that heat is released from the reaction

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How many liters of 4.0 M NaOH solution will react with 0.60 liters 3.0 M H2SO4?
slava [35]

Answer:

A. 0.90 L.

Explanation:

  • NaOH solution will react with H₂SO₄ according to the balanced reaction:

<em>H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O.</em>

<em>1.0 mole of H₂SO₄ reacts with 2.0 moles of NaOH.</em>

  • For NaOH to react completely with H₂SO₄, the no. of millimoles should be equal.

<em>∴ (MV) NaOH = (xMV) H₂SO₄.</em>

x for H₂SO₄ = 2, due to having to reproducible H⁺ ions.

<em>∴ V of NaOH = (xMV) H₂SO₄/ M of NaOH</em> = 2(0.6 L)(3.0 M)/(4.0 M) = <em>0.90 L.</em>

4 0
3 years ago
Atoms containing the same number of protons and different numbers of neutrons are _____. (1 point)
Vadim26 [7]
I believe that it could be isotopes
3 0
3 years ago
Read 2 more answers
. One of the essential minerals in the human body is salt. How much salt (NaCl) is in the average adult human body?
son4ous [18]

Answer:

200g or 40 teaspoons

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4 0
3 years ago
eleanor purchased $2568 worth of stock and paid her broker a 0.5% fee. She sold the stock when the stock price increased to 3928
Mrrafil [7]

Answer: $1338.16

Explanation: Total cost of stock= $2568

Total cost of stock including the brokerage =2568+\frac{0.5}{100}\times {2568}=2580.84$

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Selling price of stock including trading fee=($3928-$7)=$3919

Net Proceeds = Net selling price of stock - Cost Price of stock

Net Proceeds = ($3919 - $2580.84) = $1338.16


5 0
3 years ago
Which is the best description of a molecule?
mojhsa [17]
By definition, we have to:
A molecule is a group of at least two atoms in a defined configuration linked by chemical bonds.
We have two types of molecules:
1) several atoms of a single chemical element, as in the case of oxygen. (O2)
2) Atoms of different elements, as in the case of water. (H2O)
Answer:
the best description of a molecule is:
A: A molecule of an element is composed of at least two types of atoms.
3 0
3 years ago
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