Science test I need help for answers answer both

Science Test I Need Help For Answers Answer Both

Answers

Answer 1

Answer:

The answer to the first question is C. Also im pretty sure the answer to the next problem is C as well

Explanation:


Related Questions

The compound Mg(OH)2 is incorrectly named magnesium dihydroxide.
Explain the errors)

Answers

Answer:

Mg(OH)2 is an inorganic compound and it's a base.

because it has a hydroxide ion and its name is magnesium hydroxide

Which of the following best describes a galaxy?
A. a particle of debris in the solar system that does not act as a satellite of any planet.
B.a visible body of liquid or frozen crystal droplets suspended above a planetary surface
C. a massive system of stars, gas, dust, and dark matter bound together by gravity
D.The visible path of a meteoroid as it enters Earth's atmosphere
Need help ASAP

Answers

Answer: the anser is a

Explanation:

The galaxy is a massive system of stars, gas, dust, and dark matter bound together by gravity. Option C is correct.

What is gravity?

The galaxy is a force of attraction that attracts the particles or abject towards themselves and it gets double the mass of the object and has the capacity to bound the objects.

In a galaxy all are revolving around the orbits and satellites due to gravity and all these stars dust etc are also part of the universe which is bounded by The galaxy is a massive system of stars, gas, dust, and dark matter bound together by gravity

Therefore, Option C is correct.The galaxy is a massive system of stars, gas, dust, and dark matter bound together by gravity

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Which organism is able to form organized patterns of behavior through the process of integration because it has ganglia?

-mouse
-shark
-grasshopper
-flatworm

Answers

Answer:

flatworm

Explanation:

The answer is flatworm

Which statement best describes physical properties?
A. Physical properties behave identically for all matter under the same conditions.
B. Physical properties can be observed without changing the identity of a substance. C. Physical properties are observed by seeing how a substance reacts with other substances.
D. Physical properties cause atoms and molecules to change structure when substances are mixed.

Answers

Answer:B

Explanation:

Which part of the ocean has the lowest temperatures and highest salinity?

Answers

Answer:

The north atlantic contains the warmest and saltiest water of the major oceans, the southern ocean is the coldest, the north pacific has the lowest average salinity. This density signature is locked into the water parcel when it sinks

Explanation:

i think

According to the cup wall diagrams, why does the double wall vacuum
sealed cup outperform the other two cups
Because the particles are moving so fast in a vacuum that
they are able to pass through the walls and transfer more
kinetic energy to the liquid in the cup.
B
The vacuum allows for the all of the particles to pack in tightly
therefore nothing can pass through.
There is little to no transfer of kinetic energy between the
walls of the cups because there are no particles in a vacuum.
And since there is little to no transfer of kinetic energy there
is little to no transfer of temperature. Therefore the liquid
inside stays warmer/colder longer.
The particles in a vacuum do not move at all. Therefore there
is no kinetic energy and nothing can be transferred.

Answers

Answer:

i do not now

Explanation:

After studying weather, Beto bought a simple weather station and put it up in his yard. He was especially interested in wind and how it forms around Earth. Choose the correct words or phrases to complete the sentences.

Answers

Incomplete question. The remaining part reads;

Choose the correct words or phrases to complete the sentences.

Global winds occur due to

1. Choose...

a. solar currents

b. convection currents

c. sea breezes

d. uneven heating

over a large area and this forms

2. Choose...

a. solar currents

b. convection currents

c. sea breezes

d. uneven heating

caused by cool and warm air.

Answer:

1. d. uneven heating

2. b. convection currents

Explanation:

1. What Beto should know is that as the earth moves and rotates around the sun, some parts of the Earth receive more sunlight and others less, which then leads to uneven heating over a large area of the earth.

2. This uneven heat then forms a convection current containing varying patterns of air spreading to various parts of the globe.

Which of the following is NOT a chemical change?
A. Tarnishing silver
B. Melting butter
C. Digesting food
D. Baking a cake

Answers

Answer:

Melting butter

Explanation:

You can reverse the change of butter back to its original state but you can never reverse the rest back to there original state

Why must the final product of a decay series be stable?

a. The daughter isotope of any radioactive decay is stable.
b. No decay chain can emit more than two particles.
c. Each decay results in a net loss of particles.
d. If the daughter isotope is unstable, it will decay.

Answers

Answer:

I think its d

Explanation:

Because isotopes decay due to being unstable so if the daughter isotope is unstable it will just decay till it produces a stable isotope

Answer:

d. If the daughter isotope is unstable, it will decay

Explanation:

got it correct on quiz

From the formula, write the correct name for the ionic compound.



MgBr₂
KCl
Al₂S₃
BeCl₂
MgCl₂
GaN
CaO
BaO
AgBr
NaF
SrS
LiCl
AlP
CsI



From the Ionic compounds name, write the correct formula.

potassium chloride
magnesium bromide
aluminum sulfide
magnesium phosphide
calcium oxide
barium oxide

Answers

Answer: mgbr2 magnisum bromide

KCI potassium chloride

AI2S3 aluminum sulfide

MG3p2 magnisum phosphide

CaO calcium oxide

BaO barium oxide

Explanation:I did this one time

Is it possible to have more atoms on the product side of a chemical reaction than there are on the reactant side? Explain why or why not.

Answers

Answer:

No, you cannot.

Explanation:

Due to the Law of Conservation of Energy all chemical equations have to be balcned. The Law of Conservation of energy states that matter cannot be neither created nor destroyed. By having more atoms on either side, you are breaking this law.  

Help me real quick !!

Answers

Answer:

yellow

if not sorry that's though the best answer

Explanation:

What family has 4 valence electrons?

Answers

Answer:carbon group

Explanation:

How are a proton and a neutron alike?
A. Each is found outside the nucleus.
B. Each has a positive charge.
C. Each has a mass of1 amu.
D. Each has a charge that balances the charge of an electron.

Answers

A. Each is found outside the nucleus

A. Each has a charge that balances the of an electron

How many atoms of hydrogen appear to be on the reactant side?

Answers

Answer:

Two

Explanation:

In chemical equations, the number of atoms of each element in the reactants must be the same as the number of atoms of each element in the products.

Answer: 2 it has two

Explanation:

The daily rotation of Earth causes ______ and _____. *

High Tide
Low Tides
Day
Night
Spring Tide
Neap Tide


Really need this!! for a big grade! thank you guys ~ please help!

Answers

Answer:

Day and Night

Explanation:

Google :)

Which statement accurately describes radioactive dating?
O Geologists use only one type of radioactive dating.
O Geologists compare parent and daughter elements to determine rock type.
O Geologists will measure how stable multiple parent elements can decay into multiple daughter elements.
Geologist compare the observed abundance of naturally occurring radioactive isotopes and their decay products
using decay rates.

Answers

Answer:

its d and can i get brainliest plz:)

Explanation:

The statement accurately describes radioactive dating Geologist compare the observed abundance of naturally occurring radioactive isotopes and their decay products using decay rates.

What is radioactive substance?

A substance in which a unstable nuclei is contained is called as radioactive substance. Radioactive decay is a process in which an unstable nucleus loses energy by the process of radiation. There is a random process that happens in radioactive substances that is radioactivity. The type of product produced after radioactive emission depends on the type of radioactive decay.

Radioactive decay can be of different types like alpha decay, gamma decay or beta decay. Alpha particles, beta particles or gamma particle are emitted in these.

Given options are-

Geologists use only one type of radioactive dating.

Geologists compare parent and daughter elements to determine rock type.

Geologists will measure how stable multiple parent elements can decay into multiple daughter elements.

Geologist compare the observed abundance of naturally occurring radioactive isotopes and their decay products using decay rates.

Therefore, The statement accurately describes radioactive dating Geologist compare the observed abundance of naturally occurring radioactive isotopes and their decay products using decay rates.

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a student wrote The Following hypothesis if more salt is added to a hypothesis

Answers

Answer:

i love adding salt to my hypothesis

Explanation:

What is a primary role of decomposers in an ecosystem?
Select one:
O a. They eliminate matter by taking nitrogen from the ecosystem.
O b. They eliminate matter by taking phosphorus from the ecosystem.
O c. They cycle matter by returning carbon and other matter to the ecosystem.
O d. They cycle matter by returning oxygen and other matter to the ecosystem.

Answers

Answer:

c

Explanation:

they use oxygen in their breakdown process and at the end of the breakdown they return nutrients like carbon dioxide and nitrogen back to the ecosystem.

Answer:

c. They cycle matter by returning carbon and other matter to the ecosystem.

Which equation is balanced?

Al+3O2→Al2O3

2Al+3F2→2AlF3

Na+F2→2NaF

Mg+2O2→2MgO

Answers

Answer:

3rd one

Explanation:

I just took the test and got 100%

Answer:

2nd one

Explanation:

Took the test

what is the correct lewis dot diagram for KCL

Answers

[k]+ [:CL:] -

k has no dots and CL had 8 so 2 on each side of CL and then CL is negative after the closed brackets


How many bonds and lone pairs are in the molecule SIH4?
A.2 bonds, 2 lone pairs
B.4 bonds, 4 lone pairs
C.no bonds, 4 lone pairs
D.4 bonds, no lone pairs

Answers

Answer:

there are no valence electrons left over, so the molecule has four bond pairs and no lone pairs.

Explanation:

When an atom gains three electrons, it becomes

Answers

Anion it becomes.....thank you

Which of these do plants need for photosynthesis to occur?
OA.
glucose and water
ов.
glucose and carbon dioxide
OC.
water and carbon dioxide
OD.
water and oxygen

Answers

Answer:

OC. water and carbon dioxide

Explanation:

The equation for photosynthesis is Carbon dioxide plus water plus light energy yields sugar (glucose) and oxygen

Answer:

Water and carbon dioxide

Explanation:

We learned this in Grade 2.

What will happen to the gas molecules in the container as thermal energy is applied?

a-The movement, kinetic energy, and pressure of the molecules will increase.
b-The movement, kinetic energy, and pressure of the molecules will decrease.
c-The movement, kinetic energy, and pressure of the molecules will stay the same.
d-The movement of the molecules will increase, but the kinetic energy and pressure of the molecules will stay the same.

PLZ HELP I HAVE A BENCHMARK TEST!!!!

Answers

Decreased because we all know what happen if we put it with thermal energy

When thermal energy is supplied to gas molecules in the container, the movement, kinetic energy, and pressure of the molecules will increase.

Gas molecules are in constant random motion. They collide frequently which other and the walls of the container.

When thermal energy is applied, the gases move faster (acquire higher velocity). The kinetic energy also increases accordingly.

As a result of the increase in thermal energy, gas molecules collide with the walls of the container more frequently (pressure increases).

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3.2 g of a gas at occupy the same volume as 0.6266 g of CH4 at 17°C at constant pressure
Find the molecular mass of the gas.​

Answers

Assuming gas temperature = 25, 3.2 g of a gas at 25°C occupy the same volume as 0.6266 g of CH4 at 17°C at constant pressure

The molecular mass of the gas : 842.1 g/mol

Find the molecular mass of the gas.​Further explanation

Given

3.2 g of gas

0.6266 g of CH4

Required

the molecular mass of the gas

Solution

Because V, P, and R are the same, from ideal gas law :

PV=nRT

n₁T₁=n₂T₂

n₂=moles CH₄= 0.6266 : 16 g/mol = 0.0392

T₁=25+273=298 K

T₂=17+273=290 K

mol of gas :

[tex]\tt n_1=\dfrac{n_2.T_2}{T_1}=\dfrac{0.0392\times 290}{298}=0.038[/tex]

molecular mass :

[tex]\tt M=\dfrac{3.2}{0.038}=842.1[/tex]

ASAP!! Which one of the following substances can be produced during an acid-base neutralization reaction?
A. Al(OH)3
B. HCl
C. H2O2
D. MgBr2

Answers

Answer:

c

Explanation:

because it's a form of wayer jgc

Select three parts of the cell theory.
A- All cells come from pre-existing cells.
B- Cell is the official name of the smallest unit of life.
C- All plants and animals are made from cells.
D- Cells are the basic unit of structure and function in organisms.

Answers

The answer is
A,B,C

all cells come from cells.

All living things are made up of cells.

A cell is the smallest unit of life.

162.4 NH3 =____mol NH3

Answers

Answer:

162.4

Explanation:

Because yea thats the answer no need to tell you why ok bye

Which of the following explains a difference between genes and chromosomes

Answers

Answer:

Dude I need the answers so i can help you!

Explanation:

Give me the answers plz

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