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
Sonja [21]
3 years ago
11

Can someone help with 10 a and b please

Chemistry
1 answer:
weqwewe [10]3 years ago
7 0

Answer:

for question a element A and B are isobars

for question b element C and D have the same atomic numbers.

Explanation:

  1. element A and B are isobars because they have the same mass numbers but different atomic numbers. The different atomic numbers is  as a result of the difference in proton number of each elements A and B. (A and B are two different elements).
  2. element C and D are isotopes of the same element  because they have the same atomic numbers (same number of protons) but differ in number of neutrons resulting in the different number of mass numbers. (C and D are the same elements)

You might be interested in
How many mL of .450 M HCL is needed to neutralize 30mL of .150 M Ba(OH)2
Aleks04 [339]
You need .556M HCL to neutralize that
7 0
3 years ago
An asteroid hit the Yucatán Peninsula about 65 million years ago,
Morgarella [4.7K]

Answer:

C. It blocked out sunlight

Explanation:

The asteroid impact 65 million years ago was devastating for lot of the animals and plants, resulting in a mass extinction, most noticeably of the dinosaurs. The impact itself killed a lot of flora and fauna, but it was the effect afterward that was crucial. From this impact, there was so much debris propelled into the atmosphere that the sunlight got blocked. Once this happened, most of the plants died out as they were not able to perform photosynthesis. Because the plants were dying out, the herbivores were left without food, so soon they followed, and because the herbivores died out, the predators died out to because they were left without food. The winners turned out to be the small and not specialized plants and animals.

7 0
3 years ago
I need you to solve for me plzzzzzz
Sergeu [11.5K]

Answer:

.0556 L

Explanation:

First, convert the 1.35 M to 1.35 mol/L in order for the units to correctly cancel out.

Then, multiply (0.0725 moles Na2CO3/1) times (L/ 1.35 mol).

Finally, the answer will be .0556 L.

<h3 />
3 0
2 years ago
Nitrogen - 14.0067
alina1380 [7]

Answer:

potasium to erbium

Explanation:

3 0
3 years ago
Pls help ill mark as brainliest :)
Alina [70]

Answer:

I think its a double reaction

Explanation:

4 0
3 years ago
Other questions:
  • If chlorine gas is bubbles through an aqueous solution of sodium iodide,the result is elemental iodine and aqueous sodium chlori
    14·1 answer
  • Write the chemical equation for the reaction of lithium hydroxide (LiOH) with an Arrhenius acid of your choosing. Name and write
    8·1 answer
  • which of these is an example of a chemical change A breaking glass B mealting ice on a windshield C burning gasoline D denting a
    14·2 answers
  • What is the partial pressure of oxygen gas in a mixture which contains 540 mmHg He, 203 303 Pa N2 if the total pressure of the m
    9·1 answer
  • In what state of matter are the particles vibrating at high speeds?
    13·1 answer
  • How many neutrons are there in 9 molecules of P4 with mass number 31 and proton number 15?
    13·2 answers
  • How many molecules of oxygen are in 3.0 moles of oxygen?
    13·2 answers
  • What form of energy causes an ice cube to melt
    11·1 answer
  • Calculate the final concentration of each of the following:
    9·1 answer
  • E. Which of the following is a mixture? i. Water ii. Hydrogen iii. Air iv. Iron​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!