A scientist compares two samples of white powder. One powder was present at the beginning of an experiment. The other powder was present at the end. She wants to determine whether a chemical reaction has occurred. She finds that neither sample bubbles or dissolves in water. She measures the mass and volume of the solids. Sample one has a volume of 45 cm3 and a mass of 0.5 g. Sample two has a volume of 65 cm3 and a mass of 1.3 g. What should the scientist conclude?

A.
The samples have the same color, so no chemical reaction has occurred.
B.
The two samples do not react with water, so no chemical reaction has occurred.
C.
The densities of the samples are different, so a chemical reaction has occurred.
D.
The densities of the samples are the same, so no chemical reaction has occurred.
E.
The densities of the samples are different, so no chemical reaction has occurred.

Answers

Answer 1

Answer:

I think it is C because there densities are different.

Related Questions

HELPP PLZZZZZZ !!!!!!!!
What provides the energy for all living processes?
A. chemical bonds
B. ionic compounds
C. radioactive isotopes

Answers

Answer:

Explanation:

The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers, such as plants and algae, use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter.

Which location would have the LEAST variation in air temperature during a 24-hour period?
A)
A
B)
B
o
D)
D

Answers

Answer:

Explanation:

Explain how form and function are related in human cells. Include examples.

Answers

Answer:

Many human cells are specialized in form and function because each cell in the body carries out life processes that help the human body to survive. For example, nerve cells have long projections that help to carry electrical messages to other cells.

I need help with 1,2,4,5,6, and 7. I already did 3 :)

Answers

Answer:

Answers, in order:

40, Temperature steeply decreases, 2, Effect decreases steeply, 5 and 9, 10

During the process of photosynthesis, green plants produce...
(1) sunlight
(3) nitrogen
(2) methane
(4) sugar

Answers

Answer:

Explanation:

Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel

PLEASE I NEED HELP ILL GIVE BRAINIEST !!!!

Answers

Answer:

the correct sequence of arrangement of level of ecological organization from least to most inclusive is organism,population, community

Answer:

Its below in the explanation

Explanation:

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.

Since species is the widest category.

The pedigree below is for a family that has the allele for thalassemia, a recessive genetic disorder. Which individual has thalassemia?
individual 2
individual 5
individual 7
individual 10

Answers

Answer:

Individual 10 is the answer

Explanation:

I just took the quiz on edge

Answer:

The answer is Individual 10, hope that helps.

Explanation

Because it is right on Edge

the ___severs as a relay station between the hindbrain and the forebrain.
A. forebrain

B. Midbrain

C.cerebral cortex

D. hindbrain

Answers

Answer:

B. Midbrain

Explanation:

I'm pretty sure this is it.

the answer is the midbrain cuz u can cross of forebrain and hindbrain and the cerebral cortex doesn’t apply so it’s B

what information is copied from DNA to mRNA

Answers

Answer: transaction

Explanation:

Answer:

Transcription is the process by which the information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA). DNA safely and stably stores genetic material in the nuclei of cells as a reference, or template.

Explanation:

PLEASE MARK ME AS BRAINLIEST

pls ans this qa i will mark u as brainlist ans

Answers

ans b

Explanation:

milk teeth are less than permanent teeth

The amino
Each codon calls for one
acids are linked together by
It takes many amino acids to form a protein.
plz answer quick

Answers

Answer:

1. Proteins.

2. Peptide Bonds.

Explanation:

I majored in Biology

Please help me I beg you please help

Answers

Answer:

A-T

T-A

C-G

A-T

G-C

C-G

T-A

A-T

Answer:

ATTCAGGCTA= TAAGTCCGAT

Explanation:

adenine pairs with thymine with 2 hydrogen bond in DNA and cytosine pairs with Guanine with 3 hydrogen bonds .

The illustration is a representation of multiple gene alleles on the same chromosome. One inherited trait linked to alleles "A", "a", "D", "D", "t", and "T" is determined by __________.

Answers

Answer:

A characteristic linked to the alleles that is inherited is the genotype.

Explanation:

The genotype is the genetic makeup of an individual. The genotype is determined by the alleles and is passed from father to son through the transmission of alleles, that is, the genotype is an inheritable characteristic. The genotype cannot be modified by the environment, nor can it be modified in a natural way, but it can be modified through mutations that are also inheritable.

The special job an organism plays in it's ecosystem is it's __________.
biome

population

niche

biodiversity

Answers

Answer:

Niche

Explanation:

The role a species plays in the ecosystem is called its niche. A habitat is the physical environment in which a species lives.

Answer:

niche

Explanation:

The role a species plays in the ecosystem is called its niche. A habitat is the physical environment in which a species lives.

What soil horizon is the most important for the growth of plants (agriculture) ?

Answers

Accumulative

the accumulative or B horizon is the most fundamental part of soil from many standpoint

Put "Gene Pool" in a sentence

Answers

Answer:

A gene pool is a collection of all the genes in a population. This can be any population - frogs in a pond, trees in a forest, or people in a town.

Explanation:

Which component of the endomembrane system is responsible for packaging and preparing exist proteins in vesticles?

Answers

Answer: Golgi apparatus

Explanation: The Golgi is responsible for packaging sorting tagging and distribution.

Hope this is helpful :)

____is a restriction to the flow of electrons

Answers

Answer:

Impedance.

Explanation:

Conductors allows the flow of electrons and Impedance restricts it.

But this on your own sentences please

Answers

Since hydropower is powered by water, it’s a good fuel source. It will not contaminate the air like power plants that release fossil fuels, for example coal and oil. It does not rely on international fuel sources and lets each state make their own energy.

Which worm shown is most likely a segmented worm?

Answers

Answer:

phylum Annelida and and leeches

Explanation:

Answer:

Explanation:

Help now please fast!!!

Answers

Answer:

29.0576 meters per second

Answer:

Explanation:

29 m/sec

what happened to the
beak depth of finches born in 1978 compared to those born in 1976? Explain why you
think this occurred.

Answers

Answer:

Why do you think the average beak depth of the birds increased?

Explanation:

Because the drought reduced the number of seeds and finches with bigger beaks were able to eat the larger and harder seeds so more of them survived.

I hope this helps!! god bless!! - Natalia

The pituitary gland is most similar to:
A A worker in a factory
B A mail carrier
C The boss of a big office
D A security guard or police officer

Answers

Answer:

C. The boss of a big office

Explanation:

It tells all the other hormones what to do

Have a great day!

Give three reason why specialized systems are necessary in large multicellular organisms

Answers

Answer:

Specialized systems are necessary in large multicellular organisms since 1. there is a division of labor between cells, 2. many individual cells cannot work together without coordination, and 3. most of the cells are not in direct contact with the outside environment

hope it helps

pls mark me as brainliest

There is the picture to the question

Answers

Answer:

DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

True or False.
A group of the same species of living things in an area is a population

Answers

Answer:

True.

Explanation:

A population is a group of organisms of the same species that live in the same area at the same time

Answer:

True!

Hope this helps.

What are molecules?

Answers

The smallest unit into which a substance can be divided without changing its chemical nature

Hopes this helps uh ♥️♥️

Answer:

a group of atoms that form the smallest identifiable unit

Explanation:

state birth control methods according to Islam view?
help please

Answers

Explanation:

There is no single attitude to contraception within Islam; however eight of the nine classic schools of Islamic law permit it. But more conservative Islamic leaders have openly campaigned against the use of condoms or other birth control methods, thus making population planning in many countries ineffective.

Which best summarizes the composition of the surface of Earth? NEED HELP PLEASE THIS IS DUE TODAY!!!!
A.
Three-fourths of Earth’s surface is land.

B.
One-fourth of Earth’s surface is water.

C.
Earth’s surface contains more land than water.

D.
Earth’s surface contains more water than land.

Answers

Answer:

Explanation:

Because earths surface is 29% land, and 71% water

Which of the following is NOT included in a soil survey?
O Maps with soil boundaries and photos
O Tables of soil quality and type needed for certain uses
O Tables of soil properties and features
O Descriptions of soils in the area

Answers

Answer:

Soil survey, or soil mapping, is the process of classifying soil types and other soil properties in a given area and geo-encoding such information. ... An architect or engineer might use the engineering properties of a soil to determine whether or not it was suitable for a certain type of construction.

Other Questions

_____ and ______ of sounds can make a poem sound more lively and potentially funny.simile, metaphorpun, conundrumpalindrome, homonymrepetition, imitationhurry plz i am on a test What images does Thomas create with his words in this stanza (what do you see in your head based on his descriptions)?:DO Not Go Gentle poemDo not go gentle into that good night,Old age should burn and rave at close of day;Rage, rage against the dying of the light.Though wise men at their end know dark is right,Because their words had forked no lightning theyDo not go gentle into that good night.Good men, the last wave by, crying how brightTheir frail deeds might have danced in a green bay,Rage, rage against the dying of the light.Wild men who caught and sang the sun in flight,And learn, too late, they grieved it on its way,Do not go gentle into that good night.Grave men, near death, who see with blinding sightBlind eyes could blaze like meteors and be gay,Rage, rage against the dying of the light.And you, my father, there on the sad height,Curse, bless, me now with your fierce tears, I pray.Do not go gentle into that good night.Rage, rage against the dying of the light. 2. 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A costume designer is using exactly 264 yards of green fabric to make 36 frog costumes. If each costume requres the same amount of fabric, how many yards will be used for each one? One number is 6 less than 5 times the other number. Their sum is 60. Find the numbers. Imagine you are a scientist, working at betty crocker institute on how to cook good. You are tasked with coming out with a new model of baking dish. your materials for making the baking dish are covalent compounds like plastic, and ionic compounds like plaster. which material would you make the baking dish out of and why? Need help ASAP Thankss + BRAINLIST only for correct answer What is the quotient of 3/7 and 14? n the Arctic, caribou and musk ox eat different kinds of plants, but the plants they eat typically grow in the same area. Therefore, these two species often require the same space in which to feed. 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