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
CaHeK987 [17]
3 years ago
6

The diagram shows a model of an atom. Who first proposed this model?

Chemistry
1 answer:
Rzqust [24]3 years ago
6 0

Answer:

D. Rutherford

Explanation:

You might be interested in
3Pb2+(aq) + 2Cr(s) → 3Pb(s) + 2Cr3+(aq) What is the number of moles of electrons gained by 3.0 moles of lead ions?
Setler [38]
To determine the electrons gained in this redox reaction, we must balance the charges on the side containing the reduced substance and the side with oxidized substance. In this case, the reduced substance is Pb2+ and the oxidized substance is Cr. In each side, 6 electrons are gained or lose to balance the charges. The answer is 6 electrons.
4 0
3 years ago
Read 2 more answers
A gas mixture containing He, Ne, and Ar exerts a pressure of 3.00 atm. What is the partial pressure of each gas present in the m
matrenka [14]
<h3>Answer:</h3>

Partial pressure of He(P(He) = 1.5 atm.

Partial pressure of Ne(P(Ne) = 1 atm.

Partial pressure of Ar(P(Ar) = 0.5 atm.

<h3>Explanation:</h3>

According to Dalton law of partial pressure the sum of partial pressures of individual gases in a gaseous mixture is equivalent to the total pressure.

The partial pressure of a gas in a gaseous mixture is given by the product of the mole fraction and the total pressure.

Our gaseous mixture contains He, Ne, and Ar and the total pressure is 3 atm.

Since we are given the ratios of the gases in the mixture, we can calculate the partial pressure of each gas.

P(He) = 3/6 × 3 atm.

         = 1.5 atm.

P(Ne) = 2/6 × 3 atm.

        = 1 atm

P(Ar) = 1/6 × 3 atm.

        = 0.5 atm

Therefore, the partial pressures of gases He, Ne and Ar are 1.5 atm, 1 atm, and 0.5 atm respectively.

8 0
3 years ago
I need help with question 4, please help
Natasha_Volkova [10]

Answer:

yes

Explanation:

because chemical wheathering  could wheather it away into a ditch

3 0
3 years ago
What is the key characteristic of an oxidation–reduction reaction?
Dmitriy789 [7]

Answer: C. Electrons are exchanged

Explanation:

Oxidation-Reduction reaction (Redox) is a type of chemical reaction in which there is a transfer of electrons between the reacting substance.

In this type of reaction, one of the reacting substance, called the Reducing  Agent, undergoes Oxidation (loss of electrons), while the other reacting substance, called the Oxidising Agent ,undergoes Reduction (gains electron).

4 0
3 years ago
If 2.0 liters of oxygen gas react with excess carbon monoxide at 273 K and 1.00 atm, how many liters of carbon dioxide can be pr
vlada-n [284]
The given condition is STP, under this condition, gas has a rule of 22.4 L per mole. And the given equation is already balanced. The ratio of mole number is the same as the ratio of the volume and is also the same as the ratio of coefficients. So the answer is 4.0 liters. 
5 0
3 years ago
Other questions:
  • Paper is stable at room temperature in the presence of oxygen (O2) because it requires ____________ to start the reaction.
    13·1 answer
  • Characteristic of a chemical compound
    13·1 answer
  • What is the second most abundant isotope of oxygen
    12·1 answer
  • Problem 1:. The melting points of canola oil, corn oil, sunflower oil, and peanut oil are 10°C, –11°C, –17°C, and –2°C. Based on
    13·2 answers
  • Which geological features MOST LIKELY prompted the development of the theory of plate tectonics?
    11·2 answers
  • A chemist prepares a solution by adding 293 mgmg of K2Cr2O7K2Cr2O7 (MWMW = 294.19 g/molg/mol ) to a volumetric flask, and then a
    13·1 answer
  • This stadium can hold 100,000, or 1 x 10^5, people. The number of atoms in a grain of iron is about 1 x 10^18. Would you need 1 
    15·1 answer
  • What is an atomic nucleus
    5·2 answers
  • What is the crystalline arrangement of atoms shown here?
    12·1 answer
  • A compound has a molecular weight of 112. 124 atomic mass units and the empirical formula C3H4O. What is the molecular formula o
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!