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forsale [732]
3 years ago
7

How can you use litmus paper to distinguish an acid from a base?

Physics
1 answer:
11Alexandr11 [23.1K]3 years ago
7 0
Hello! When litmus paper is placed in an acid, it usually turns red. When it is placed in a base, it turns dark-purple. Hope this helps! :)
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Which law describes how the Earth applies a gravitational force on the Moon, the Moon applies a gravitational force on Earth? *
nikdorinn [45]
The answer is Newton's 3rd Law. The reason why is because a force is a push or a pull that acts upon an object as a results of its interaction with another object. ... These two forces are called action and reaction forces and are the subject ofNewton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction.
3 0
3 years ago
Read 2 more answers
Consider the two electron arrangements for neutral atoms a and b. Are atoms a and b the same element? a - 1s2, 2s2, 2p6, 3s1 b -
Agata [3.3K]

The two neutral atoms A and B have the same number of electrons and atomic number 11. So, the two elements are said to be same.

The electronic configuration of the element is the arrangement of the electrons in the atom of the element in energy levels, orbitals around the nucleus.

The electrons in the atoms of the element with lowest energy are written first before those with higher energy levels. Thus, the electronic configuration shows the electrons in the atoms of the element arranged in order of increasing energies.

The electronic configuration of atoms are given as

A = 1s² 2s² 2p⁶ 3s¹

B = 1s² 2s² 2p⁶ 5s¹

The number of electrons in both the elements is 11. Therefore, their atomic number is also the same i.e, 11. So, both the elements are the same.

To know more about atomic number:

brainly.com/question/8645622

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4 0
1 year ago
How is the oxygen level of blood related to its color?
MAVERICK [17]
Answer:

Hemoglobin bound to oxygen absorbs blue-green light, which means that it reflects red-orange light into our eyes, appearing red. That's why blood turns bright cherry red when oxygen binds to its iron. Without oxygen connected, blood is a darker red color.

Hope this helps :)
6 0
3 years ago
a stone is tied to a string and whirled around in a circle at a constant speed. is the string more likely to break when the circ
DochEvi [55]

Answer:

The string is more likely to break when the circle is vertical

Explanation:

The string is more likely to break when the circle is vertical because tension in the string is the same throughout the circular motion and it is equal to mrw^2 when it is rotated in the horizontal plane while tension in the string is maximum and is given by mrw^2+mg when in the vertical plane.

3 0
3 years ago
A nautical mile is _____.
Leviafan [203]
Grater than a statute mile 
5 0
3 years ago
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