Recent questions in Chemistry

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Combination precipitation single replacement combustion double replacement acid-base decomposition

Brosa asked Dec 18, 2024

by Brosa

8.4k points

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White mocha syrup expires in ________

Vasil Velichkov asked Dec 18, 2024

by Vasil Velichkov

7.9k points

1 answer

5 votes

147k views

Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs, write NR after the reaction arrow. Be sure to include the proper phases for all species within the reaction.

Jakub Holovsky asked Dec 18, 2024

by Jakub Holovsky

8.0k points

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Assign oxidation numbers to the specified element in each of the following: a) S in H₂SO₃ b) S in MgSO₄ c) S in K₂S d) Cu in Cu₂S e) Cr in Na₂CrO₄ f) N in HNO₃ g) C in (HCO₃)⁻ h) N in (NH₄)⁺

Dyng asked Dec 18, 2024

by Dyng

8.2k points

1 answer

1 vote

145k views

Class D controlled products has two Divisions which are subdivided because of their a) flammability b) toxicity c) explosiveness d) oxidizing abilities e) reactivity

Gregori asked Dec 18, 2024

by Gregori

7.8k points

1 answer

2 votes

163k views

12 Which of the following lists of elements contains the most common elements in organic compounds? A. calcium, iron, and potassium B. carbon, hydrogen, and oxygen C. chlorine, phosphorus, and sodium D.

Aurelie asked Dec 18, 2024

by Aurelie

7.8k points

1 answer

1 vote

96.7k views

how many gallons of gasoline that is 5thanol must be added to 2,000 gallons of gasoline with no ethanol to get a mixture that is 3thanol? select one: a. 4,115 b. 6,000 c. 3,000 d. 1,800

Seler asked Dec 18, 2024

by Seler

8.5k points

1 answer

1 vote

68.7k views

What does solid, scientific evidence suggest mindfulness interventions improve?

Chinelle asked Dec 18, 2024

by Chinelle

8.5k points

1 answer

0 votes

103k views

Explain how to make 1 Liter of a 0. 45 M solution of K2SO4 using K2SO4 powder and water. Be sure to include the quantity of powder needed

William Martens asked Dec 18, 2024

by William Martens

7.6k points

1 answer

1 vote

63.3k views

Metals, especially alkali metals, can react rapidly and exothermically with water to form. A) Carbon dioxide B) Hydrogen gas C) Nitrogen gas D) Sulfur dioxide

MetalGodwin asked Dec 18, 2024

by MetalGodwin

7.9k points

1 answer

4 votes

223k views

The student in question 4 weighed the dry tablet before the reaction and found its mass to be 3.98 grams. Using the mass of the tablet that remained from question 4, what was the mass of gas released?

Osama Aftab asked Dec 18, 2024

by Osama Aftab

8.1k points

1 answer

1 vote

99.1k views

Calculate the mass of 2.864 moles of the compound Co(NH3)6Cl3. Option 1: 808.64 g Option 2: 405.32 g Option 3: 302.16 g Option 4: 606.88 g

Mick Hansen asked Dec 18, 2024

by Mick Hansen

7.8k points

1 answer

2 votes

141k views

Why should a burn be covered after cooling it? Options: A) To prevent infection B) To increase pain C) To enhance visibility D) To speed up healing

Karaca asked Dec 18, 2024

by Karaca

7.8k points

1 answer

2 votes

36.8k views

if countries switch from use of oil to use of a renewable energy resource, like solar, what positive impacts could it have?

Teivaz asked Dec 18, 2024

by Teivaz

8.4k points

1 answer

5 votes

103k views

What is the total number of electron domains in the molecule with the molecular formula AX2? 1) 0 2) 1 3) 2 4) 3

Cobp asked Dec 18, 2024

by Cobp

7.9k points

1 answer

1 vote

103k views

If CO₂ and NH3 are allowed to effuse through a container under identical conditions, the rate of effusion for NH3 will be _________ times faster than CO₂. The molar mass of CO₂ is 44.)g/mol and the molar

Luis D Urraca asked Dec 18, 2024

by Luis D Urraca

8.2k points

1 answer

1 vote

21.8k views

Give the major greenhouse gases in the atmosphere. 1) Methane, nitrogen dioxide, and water vapor. 2) Methane, carbon dioxide, and CFCs. 3) Ethane, carbon dioxide, and water vapor. 4) Methane, carbon dioxide,

Rayrutjes asked Dec 18, 2024

by Rayrutjes

8.0k points

1 answer

3 votes

58.0k views

Classify the following mixtures as homogeneous or heterogeneous. c. your sock drawer

Denny Mueller asked Dec 18, 2024

by Denny Mueller

8.9k points

1 answer

4 votes

152k views

How many moles of magnesium are needed to react with 3.0 mol of O₂? 2Mg(s) + O₂(g) → 2MgO(s) A) 1.0 mol B) 1.5 mol C) 2.0 mol D) 3.0 mol E) 6.0 mol

Siddharth Mehra asked Dec 18, 2024

by Siddharth Mehra

8.5k points

1 answer

3 votes

171k views

What does wave frequency measure? A. the distance between two corresponding points on ALTERNATING waves B. the number of waves that pass through a fixed point in a certain amount of time C. the distance

Nteetor asked Dec 18, 2024

by Nteetor

8.4k points

1 answer

5 votes

231k views

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