Which star type has the shortest life span?

1. Massive blue stars
2. Supermassive blue giants
3. Medium orange stars
4. Low mass white stars

Answers

Answer 1
i believe it’s low mass white stars

Related Questions

PLS HELPP

1. Take two water molecules and bring them close together. The hydrogen of one water molecule is attracted to what part of the other water molecule?
_____________________________________________________________


2. This attraction between parts of two different polar molecules is called __________ bonding.
_________________________________________________________________

3. Which type of bond holds the oxygen and hydrogen atoms together within a water molecule?
____________________________________________
4. Pull the hydrogen off of the oxygen in a single water molecule. Which bond is stronger, a hydrogen bond or a covalent bond?
_____________________________________________

Answers

Answer:

The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond. This bond is very weak.

Explanation:

:)

1.) Attract the slight negative charges on the oxygen atoms of other water molecules.
2.) Hydrogen Bonding
3.) Covalent Bonds
4.) Covalent Bond

10
10
40
32
O
O
20
10
10
O
20
20
305
2 read the thermometer and fill in the temperature in Celsius and feharient


Answers

Answer:

10-10 above the 0 is positive and the ones below is - (negitive)

Explanation:

Write about an object's motion in your own words.

Answers

Answer:

An objects motion is called kinetic energy.  Which is energy that is cause by movement or motion

Explanation:

Answer:

An object at rest has zero velocity - and (in the absence of an unbalanced force) will remain with a zero velocity. Such an object will not change its state of motion (i.e., velocity) unless acted upon by an unbalanced force. An object in motion with a velocity of 2 m/s, East will (in the absence of an unbalanced force) remain in motion with a velocity of 2 m/s, East. Such an object will not change its state of motion (i.e., velocity) unless acted upon by an unbalanced force. Objects resist changes in their velocity

Explanation:

an object that is not changing its velocity is said to have an acceleration of 0 m/s/s. Thus, we could provide an alternative means of defining inertia

Imagine that you have 100g of water.

You start dissolving KNO3 in the water and you find that after you've dissolved about 55 g of KNO3, you can't dissolve any more; it just sinks to the bottom.

Approximately what is the temperature of the water?

Round your answer to the nearest whole number and submit the number only; no units.

Answers

Answer:

Explanation:

So, just find 55 on the solubility side and with your finger just move to the right untill you touch the line you should get in between 46-48. I would go more for 48.

Hope you have a wonderful day!

All of the following are forms of water in the atmosphere EXCEPT _________.

Group of answer choices

A. ozone

B. precipitation

C. ice

D. vapor

Answers

Answer:

OZONE

Explanation:

HOPE IT HELP

MARK ME AS BRAINLIEST

The answer is ozone

Salinity is another word for

Question 3 options:

saltiness


density


temperature


depth

Answers

Answer:

Saltiness

Explanation:

There is no step-by-step. It h us is what it is.

Can somebody help me plz

Answers

Answer:r=1.2 d=2.4

Explanation:

Radius is half the diameter and the diameter is 2.4 m

Answer:

Divide the 2.4 by 3.14

Explanation:

Using the empirical formula, calculate the formula weight of the compound. Use the periodic table to help you.

Type the correct answer in the box. Round your answer to three decimal places.

Answers

Answer:

The formula weight of the compound is

46.069 g/mol.

Explanation:

Determine the molar mass from the empirical formula (C2H6O) by multiplying the molar mass of each element in the compound by the number of atoms of it and adding the resulting masses of the elements:

molar mass of C2H6O = (2 × 12.011 g/mol) + (6 × 1.008 g/mol) + (1 × 15.999 g/mol) = 46.069 g/mol.

(M1)(M2)+(M2)(P2)=(12.000000)(.9890)+(13.003354)(.1100)=amu

Answers

Answer:

The answer would most likely be 4.0004

Explanation:

what are the group of magnesium and nitrogen ? write the balanced chemical equation for the reaction between two element . what type of chemical reaction is it .​

Answers

Explanation:

Magnesium - Group 2

Nitrogen - Group 5

The balanced equation for the reaction is given as;

3Mg + N₂ --> Mg₃N₂

Type of reaction;

Synthesis / Direct Combination

A sample of xenon gas occupying 10.0 mL is collected in a laboratory at 27°C and 1.25 atm. What is the volume of the gas at standard conditions?​

Answers

11.8 ml is the volume

Calculate the pH if the pOH = 7.4
Round your answer to two decimal places.

Answers

i need points

Explanation:

pOH and pH add to 14.

Therefore 14 - pOH will give you the answer.

14 - 7.4 = 6.6

The pH is 6.6

pls answer if you do ty so much

Answers

Answer:

c

Explanation:

Yeah I think the answer is C

A medallion was dropped into 20.0 mL of water. The water level rose to 25.3 mL. What is the volume of the medallion? (Vobj = Vf - Vi)

Answers

Answer:

5.3 mL

Explanation:

We solve this problem using Archimede's principle, which states that the volume displaced by a submerged object is equal to the volume of the object.

With that in mind we calculate the volume of water displaced by the medallion:

25.3 mL - 20.0 mL = 5.3 mL

As the medallion displaced 5.3 mL of water when submerged, the volume of the medallion is also 5.3 mL.

help me on question
pleaseeeeeee

Answers

whats up ???????? help on what

Help ASAP I will mark brainliest to he correct answer

Answers

Answer:

513.3 km/h

Explanation:

What did scientists believe about caloric? State two examples of the scientific phenomena that the caloric theory explained

Answers

Answer:

that it was difficult, bc they didnt accept the particle model of matter, air molecule get warmer and explains charles law (i think)

A popsicle melts on a table. Select ALL statements that are true. A The particles gained thermal energy and changed from a solid to a liquid B The particles lost thermal energy and changed from a solid to a liquid C A physical change occurred D A new chemical substance was made when it melted

Answers

Answer:

its "a" nd "C" Big Dawg if im wrong im sorry dawg been a min since i took a test like dis

Explanation:

What number should replace the question mark to show the number of C6H1206 (glucose) molecules in a balanced
chemical equation?

Answers

Plz help me I have 5 minutes go to my profile and answe it the are 20 points plz
6CO2 + 6H20 ——— > C6H12O6 + 602

Most of earths fresh water is in glaciers

True or false

PEASE HELPP

Answers

Answer:

True

Explanation:

answer is TRUE!!!

Explanation:
Most of oceans are salt water.
BUT lakes, ponds, springs, glaciers, etc are fresh water

3. Find the molar mass of the following compounds:
a. Ammonia NH3
b. Iron (II) Nitrate Fe(NO3)2​

Answers

Answer: a.4

Explanation:

n=1

h=3

PLEASE HELP!!!What are the factors of climate change

Answers

Answer:

According to The genic variations in atmospheric compositions and proper use of land or the other factors the cahs climate change

Looking at the Periodic Table, how can you determine if an element is a metal, metalloid or nonmetal?

Answers

Answer:

It depends on where it's located on the periodic table.

Explanation:

Metals are on left side of the periodic table except Hydrogen (H), which is a nonmetal, then there's the staircase, which has the metalloids, and on the right of the staircase are the nonmetals.

An example of a change of state is __________. *

liquid filling a glass
paper burning
ice cubes melting

Answers

Changes of state are physical changes in matter. They are reversible changes that do not change matter's chemical makeup or chemical properties. For example, when fog changes to water vapor, it is still water and can change back to liquid water again.please mark brainliest if correct

Answer:

ice cube melting

Explanation:

bcoz it's a chemical change

How many grams of H2 will react with 350 g of N2?

Answers

Answer:

10.80

Explanation:

As per the equation, let us calculate the mole ratio. N2+3H2→2NH3. As per the equation one mole of nitrogen  reacts with 1 mol of hydrogen.

In terms of mass. 28.01 g of nitrogen needs 3 mol of hydrogen or 6.048 g of hydrogen.

We can set up the ratio;

28.01 g of

l

N

2

needs  

6.048 g of

l

H

2

1 g of

l

N

2

needs  

6.048

28.01

g  of

l

H

2

50.0 g of

l

N

2

needs  

6.048

×

50.0

28.01

l

g of

l

H

2

=

10.80 g of

l

H

2

Calculate the number of moles of nitrogen dioxide, that contain 4.0*1023 nitrogen dioxide molecule.

Answers

Answer:

0.66 mol NO₂

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Atomic Structure

Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

Using Dimensional AnalysisExplanation:

Step 1: Define

4.0 × 10²³ molecules NO₂ (Nitrogen dioxide)

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Set up:                                [tex]\displaystyle 4.0 \cdot 10^{23} \ molecules \ NO_2(\frac{1 \ mol \ NO_2}{6.022 \cdot 10^{23} \ molecules \ NO_2})[/tex]Multiply/Divide:                                                                                                   [tex]\displaystyle 0.664321 \ mol \ NO_2[/tex]

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

0.664321 mol NO₂ ≈ 0.66 mol NO₂

An aluminum (Al) boat anchor has a mass of 6800 grams. How many
moles of aluminum are in the boat anchor?

Answers

Maybe 252.02?

Molar mass of Al -26.982
6800/26.982= 252.02 mol

What is the number of moles of 60.7 liters of oxygen molecules?

Answers

Answer:

2.17 moles of gas.

Explanation:

Choose the words or phrases that correctly complete the paragraph.

Mia decided to research the hydrosphere for a class project. She is focusing on the ways the ocean varies in salinity, temperature, and depth. As you descend into the ocean, the water temperature
Choose-increases, heats,lose force,decreases(for both)
, while the water pressure
Choose...
.

Answers

Answer:

As you descend in the ocean water temperature and pressure decrease.

Explanation:

"Cold water has a higher density than warm water. Water gets colder with depth because cold, salty ocean water sinks to the bottom of the ocean basins below the less dense warmer water near the surface. The sinking and transport of cold, salty water at depth combined with the wind-driven flow of warm water at the surface creates a complex pattern of ocean circulation called the 'global conveyor belt.'" - National Ocean Services

Given the reaction: 2 H2 + O2 => O2 = 2 H2O.
What is the total mass of water formed when 497.80 g of oxygen reacts with hydrogen?

Answers

Mol of oxygen = mass / Mr = 15.556
1:2 mol ratio so multiple by 2
= 31.1125 mol of water
Mass = mol x Mr
= 31.1125 x 18 = 560.025g
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