Chemistry

Recently Asked Questions In Chemistry

Question
What is the narrator's point of
view in this excerpt from
James Hurst's "The Scarlet
Ibis?
A. Third Person Limited
the narrator
knows the thoughts of only one character
B Third Person Omniscient
the narrator
knows the thoughts of all the characters
C. First Person
the narrator is a character
in the story
Answer

A. Third Person Limited the narrator knows the thoughts of only one character

Download to view full explanation
The narrator in James Hurst's "The Scarlet Ibis" is a third-person limited narrator, meaning that the narrator only knows the thoughts...
Question
4
If you have a dominant phenotype, what are your genotype possibilities?
Answer

The genotype possibilities for a dominant phenotype are either homozygous dominant (AA) or heterozygous (Aa).

Download to view full explanation
A dominant phenotype is one that is expressed when either one or two copies of the dominant allele are present. Therefore, the genotype possibilities for a...
Question
5 CONCETTI E CONNESSIONI Completa le frasi seguenti.
• Diocleziano decise di perseguitare i cristiani perché
Answer

Diocleziano decise di perseguitare i cristiani perché riteneva che la loro fede minacciasse l'unità dell'Impero Romano.

Download to view full explanation
Diocleziano, l'imperatore romano che regnò dal 284 al 305 d.C., dec...
Question
[2] Choose the best revision, if one is needed.
A
NO CHANGE
B
mountain, climbing, and even walking
C
mountain climbing, and even walking
LIX
D
mountain climbing and, even, walking
Answer

C

Download to view full explanation
Option C is the best revision as it is the most concise and grammatically correct option. It removes the unnecessary comma after "mountain climbing" and...
Question
Which of the following is not an aspect of the atmosphere that changes?
O temperature
O nutrient levels
O pressure
• precipitation
Answer

Nutrient levels.

Download to view full explanation
The atmosphere is composed of different gases, and it has several aspects that change, such as temperature, pressure, and precipitation. However, nutrient levels...
Question
3. State the reaction between when magnesium reacts with steam.
4. Write down the equation between sodium reacts with oxygen.
Answer

3. Magnesium + Steam → Magnesium oxide + Hydrogen gas 4. 4Na + O2 → 2Na2O

Download to view full explanation
When magnesium reacts with steam, it undergoes a displacement reaction in which magnesium displaces hydrogen from water to form magnesium oxide and hydrogen gas. The...
Question
How did barometers advance science?
• They allowed scientists to study objects in space.
• They allowed scientists to measure temperature.
• They allowed scientists to measure pressure.
• They allowed scientists to observe objects closelv.
Answer

Barometers advanced science by allowing scientists to measure pressure, temperature, and observe objects closely, as well as study objects in space.

Download to view full explanation
Barometers are instruments used to measure atmospheric pressure. They have been used since the 17th century to measure changes in air pressure, which can be...
Question
• 4 = 6
How do nutrients move from place to place in an ecosystem? Move three arrows to the diagram, between the words, to show the movement
of nutrients.
Fallen leaves
Decomposers
Tree roots
Soil
Answer

Nutrients move from fallen leaves to decomposers to soil to tree roots.

Download to view full explanation
In an ecosystem, nutrients are cycled through various living and non-living components. Fallen leaves are a source of nutrients that are broken down by...
Question
door het dagelijks leven van de mens.
10. Geef twee andere redenen waarom de grote biodiversiteit an planten belangrijk is voor
het leven de mens.
... /2
Answer

1. Planten leveren voedsel, kleding en medicijnen. 2. Planten zuiveren de lucht en reguleren het klimaat.

Download to view full explanation
Planten zijn van cruciaal belang voor het leven van de mens. Ze leveren voedsel, kled...
Question
Add or remove commas, if necessary, until the sentence has correct punctuation. U
Tony Stark keeps, planning to visit aliens in outer
space.
Answer

Tony Stark keeps planning, to visit aliens in outer space.

Download to view full explanation
The sentence should have a comma after the word "keeps" to separate the two independent clauses. The comma should also be removed after the word "...
Solve any homework question FREE with our app, NO PAYMENT required!