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Zigmanuir [339]
3 years ago
8

PLEASE HURRY !! WILL GIVE BRAINLIEST

Chemistry
2 answers:
lozanna [386]3 years ago
8 0
I think it would be experiments
Montano1993 [528]3 years ago
7 0
<span> </span><span>The results of new evidence can lead to changes in scientific knowledge.</span>
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A beaker contains 500 ml of 2.40M KNO3 the beaker is left uncovered so that all of the water evaporates. What mass of KNO3 cryst
telo118 [61]

Answer:

242.4 g

Explanation:

RAM of KNO3=39+14+(16×3)=101

Mass=morality×RAM

101*2.4=242.4

6 0
3 years ago
Cubic centimeter is a unit used to measure what ?
Stolb23 [73]
A cubic centimetre (or cubic centimeter in US English) (SI unit symbol: cm3; non-SI abbreviations: cc and ccm) is a commonly used unit of volume that extends the derived SI-unit cubic metre, and corresponds to the volume of a cube that measures 1 cm × 1 cm × 1 cm.
5 0
3 years ago
3. In the formation of acid rain, sulfur dioxide reacts with oxygen and water in the air to form sulfuric acid. Write a balanced
Andreyy89

Answer:

SO₂ + 0.5 O₂ + H₂O → H₂SO₄

3.83 g

Explanation:

In the formation of acid rain, sulfur dioxide reacts with oxygen and water in the air to form sulfuric acid. The balanced chemical equation is:

SO₂ + 0.5 O₂ + H₂O → H₂SO₄

The molar mass of SO₂ is 64.07 g/mol. The moles of SO₂ corresponding to 2.50 g are:

2.50 g × (1 mol/64.07 g) = 0.0390 mol

The molar ratio of SO₂ to H₂SO₄ is 1:1. The moles of H₂SO₄ formed are 0.0390 moles.

The molar mass of H₂SO₄ is 98.08 g/mol. The mass of H₂SO₄ is:

0.0390 mol × 98.08 g/mol = 3.83 g

4 0
3 years ago
Which statements best describes a major difference types of elements
Sever21 [200]

Answer:

The atoms of different elements have different numbers of protons and electrons.

6 0
3 years ago
State three reasons why an airborne pollutant might be deposited close to its source
Oksana_A [137]

Answer:

No wind

Rain

I only came up with 2 I couldnt think of a third one

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3 years ago
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