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Aleks04 [339]
3 years ago
8

How many elements are in oxygen

Chemistry
2 answers:
Zolol [24]3 years ago
7 0

Answer:

Oxygen is made up of one element but it contains two atoms

Explanation:

kogti [31]3 years ago
5 0

Answer:

1

Explanation:

Oxygen is a pure substance therefore it is only made up of one kind of atom

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A student has four resistors. Each resistor has a resistance of 100 ohms.
ValentinkaMS [17]

Answer:

The minimum resistance is 25 ohms.

Explanation:

Resistance of each resistor is 100 ohms. When resistors are connected in parallel, the equivalent resistance is lowest. For parallel combination, the equivalent resistance is given by :

\dfrac{1}{R}=\dfrac{1}{R_1}+\dfrac{1}{R_2}+....

Here, all resistors are 100 ohms. So,

\dfrac{1}{R}=\dfrac{1}{100}+\dfrac{1}{100}+\dfrac{1}{100}+\dfrac{1}{100}\\\\R=25\ \Omega

So, the minimum resistance is 25 ohms.

7 0
3 years ago
Some studies have found that when a person mimics an angry expression, their temperature actually rises.
posledela
The correct answer is A) True
5 0
3 years ago
An allele whose trait shows up in an organism when the allele is present is a
dmitriy555 [2]

Dominant allele

Explanation:

An allele whose trait shows up in an organism when the allele is present is called a dominant allele.

An allele whose trait does not show up in an organism when present is called a recessive allele.

  • An allele is the two possible forms of gene.
  • A gene can be dominant or recessive in nature.
  • An allele is a DNA that occupies a particular locus on a chromosome.
  • They usually occur in pairs.
  • The allele determines hereditary characteristics.

Learn more:

Genetics brainly.com/question/10607948

#learnwithBrainly

7 0
3 years ago
The element copper has naturally occurring isotopes with mass numbers of 63 and 65. The relative abundance and atomic masses are
timofeeve [1]

Answer:

63.546

Explanation:

The Average atomic mass is calculated using the formula:

sum of the product of the atomic masses and their relative abundances all divided by 100 or total abundance

4 0
3 years ago
Think about what you've learned about how particle motion is related to temperature.
statuscvo [17]

Answer:

1& 4

Explanation:

1. The average kinetic energy of the particles in a substance determines the substance's temperature.

4. How fast a substance's particles are moving determines how hot or cold the substance is.

8 0
3 years ago
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