In preschool, students have the current exchange system for toys: 4 orange blocks = 5 stickers
7 stickers = 2 toy soldiers
3 toy soldiers = 6 dinosaurs
How many dinosaurs (dino) will a student get if they have 16 orange blocks?

Answers

Answer 1

Answer:

11

Explanation:

16 orange blocks = 4*5stickers

20 stickers=20*2/7 toy soldiers =40/7 toy soldiers

40/7 toy soldiers=40/7*6/3 dinosaurs =40*2/7=80/7 =11.43 ~~ 11 dinosaurs


Related Questions

A student has a container of sand and sugar. What characteristic could be used to separate the mixture?​

Answers

Answer:

Sugar will dissolve, so water.

Explanation:

Sugar is a bicubacle food source you could say, sand will not evaporate or dissolve in the water since it is not a 3c2e source. Using water will seperate them.

Answer: Heat

Explanation:

Because is you put water and sand in a container you can separated by boiling the water and all the water would evaporate and the sand would stay.

Calculate the molarity of a NaOH solution that is prepared by diluting 100mL of 0.20M NaOH with 150mL of H2O.

Answers

Molarity of solution = 0.08 M

Further explanation  

Molarity shows the number of moles of solute in every 1 liter of solution or mmol in each ml of solution  

[tex]\tt M=\dfrac{n}{V}[/tex]  

Where  

M = Molarity  

n = number of moles of solute  

V = Volume of solution  

mol of NaOH

[tex]\tt mol=0.2~M\times 100~ml=20~mlmol=0.02~mol[/tex]

molarity

Volume of solution = 100 ml + 150 ml = 250 ml

[tex]\tt M=\dfrac{0.02~mol}{0.250~L}=0.08[/tex]

Answer question number 2

Answers

Answer:

it would be the second choice

Which is the name of O3?
dioxide
oxygen
trioxygen
monoxide

Answers

The answer is C, Trioxygen

The name for O₃ molecule is trioxygen as it is made up of three oxygen atoms.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Arkeisha and Rodney are having a discussion about the correct use of the term "battery acid." Arkeisha insists that an alkaline battery does not have an actual acid contained within it, but Rodney disagrees and says that all batteries have acid in them. Which student is correct? A. Arkeisha is correct because the fluid in an alkaline battery has a pH between 0.0 and 6.9. B. Arkeisha is correct because the fluid in an alkaline battery has a pH between 7.1 and 14.0. C. Rodney is correct because the fluid in all batteries has a pH between 0.0 and 6.9, including alkaline batteries. D. Rodney is correct because the fluid in all batteries has a pH between 7.1 and 14.0, including alkaline batteries.

Answers

Arkeisha is correct because the fluid in an alkaline battery has a ph between 7.1 and 14.0

Batteries are filled with acidic fluid mostly of sulphuric acid. It have a pH about 0.8. Alkaline batteries are filled with potassium hydroxide or zinc chloride the pH is around 7 and the term battery acid cannot be used here. Thus option A is correct.

What is pH?

pH of a solution is the measure of H+ ion concentration in the solution. It says how acidic or basic the solution is. If the solution has a pH of 7 it is neutral and if its less than 7 it is acidic and a pH of more than 7 is basic.

Battery is an electronic component which converts chemical energy to electrical energy. It consist of an electrolyte and two electrodes. Usually the fluid used in battery is sulphuric acid  and it is called the battery acid.

Nowadays battery acids are replacing by alkaline fluids which are less hazardous than the acids. Most commonly potassium hydroxide, zinc chloride etc. are used as alkaline fluids.

The electrodes used in batteries are commonly zinc and magnesium. Thus, the pH of battery acid about 0.8 and option A is correct.

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During the Metric Olympics yesterday, Molly's long jump was 118.3 cm. Christy accidentally recorded her results in inches. She jumped 51.18 inches. Can you help... Who won the long jump? Christy won by about 30 cm Christy won by about 30 cm Molly won by about 25 cm Molly won by about 25 cm Christy won by about 12 cm Christy won by about 12 cm Molly won by about 10 cm

Answers

Answer: Christy won Molly by 12cm

Explanation:

Ist step

Molly's ;ong jump was 118.3cm

Christy long jump was 51.18inches

2nd Step

we change christy score to cm so we can compare

1 inch = 2.54cm.

therefore 51.18 inches = 51.18 x 2.54= 129.9972cm

Christy won molly by 129.9971cm-118.3cm=11.69 rounded to 12cm

Christy won Molly by 12cm

Calculate the volume in milliliters of a 5.05-g sample of a solid with a density of 3.25 g/mL.

Answers

Answer:

The answer is 1.55 mL

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

[tex]volume = \frac{mass}{density} \\ [/tex]

From the question

mass = 5.05 g

density = 3.25 g/mL

We have

[tex]volume = \frac{5.05}{3.25} \\ = 1.5538461...[/tex]

We have the final answer as

1.55 mL

Hope this helps you

Surface water is found in oceans, lakes, reservoirs, streams, rivers,and glaciers. Lakes, rivers, and reservoirs are where humans obtain most of the surface water they use. Aquifers are an underground source of water that humans also use.

Answers

Freshwater on the land surface is a vital part of the water cycle for everyday human life. On the landscape, freshwater is stored in rivers, lakes, reservoirs, and creeks and streams. Most of the water people use everyday comes from these sources of water on the land surface.

Element X has two naturally occurring isotopes. The isotope with mass 62.93 amu has a
relative abundance of 69.2%. The isotope with mass 64.93 amu has a relative
abundance of 30.8%. Calculate the average atomic mass of Element X. What is the
identity of Element X?

Answers

Answer: the average atomic mass is 63.546. The element is copper.

Explanation:
To solve this, you multiply the mass of each isotope by its relative abundance as a decimal (for this question, it would be 62.93 * .692 and 64.93 * .308), then you add the two results together. That gives you the average atomic mass. Then, you look at the periodic table to find which element the mass matches to. If there is none, check your math.

A substance can change into a new kind of molecule when:

Answers

Answer:

Chemical changes cause a substance to change into an entire substance with a new chemical formula. Chemical changes are also known as chemical reactions. The “ingredients” of a reaction are called reactants, and the results are called products.

Hope it helps

I'd is 643461717 and password is dynamo​

Answers

is that for Zoom?
Step by step explanation:
is that for Zoom?

Answer:bet

Explanation:

Where do we live a.Troposphere b.Thermosphere c. Mesosphere D.Stratosphere

Answers

Answer:

troposphere

Explanation:

Answer:

Hello!!! Princess Sakura here ^^

Explanation:

We live in the troposphere since 99% of the water vapor in the atmosphere is found here.

Convert each of the following masses to the units requested.
a. 0.765g to kilograms
b. 1.34 g to milligrams
c. 34.2mg to grams

Answers

Answer:

a) 0.000765kg

b) 1340mg

c) 0.0342g

Explanation:

a) 1000g = 1kg

0.765g= 0.765/ 1000

= 0.000765g

b) 1g = 1000mg

1.34g = 1.34 × 1000

= 1340mg

c) 1000mg = 1g

34.2mg = 34.2/1000

= 0.0342g

Is the study of the living plants and animals in the ocean

Answers

Answer:

marine biologist

Explanation:

marine biologist

Answer:

marine biologist a scientist who studies creatures that live in ocean water, from bacteria and shellfish to kelp and whales. mean One of several measures of the “average size” of a data set. .organism Any living thing, from elephants and plants to bacteria and other types of single-celled life.

Kinetic molecular theory states... (choose all that apply)

A. There is a chemical change when a solid melts to a liquid.
B. Particles that make up matter have kinetic energy.
C. Particles that make up matter are always in motion

Answers

I think it’s B hopefully

Help plzzzzz ASAP!!!!!!!

Answers

Answer:

3.  The total number of protons and neutrons in an atom is its mass number.

4.  The mass number of a helium atom with 2 protons and 2 neutrons is 4.

5.  A beryllium atom with 4 protons and a mass number of 9 has 5 neutrons.

6.  The chemical symbol is Ne.   The atomic number is 10.  The mass number is 22.

7.  Neon-22

8.  Not enough information

if atom X has 6 protons,6 neutrons and 6 electrons and aton Z has 6 protons,7neutrons and 6 electrons,atom x and atom z are isotopes of the element

Answers

the answer is 89! okay thank you

How do minerals differ from ores?

Answers

Ores: metal/coal (iron, gold, coal)

Mineral: not metal, (Granite, limestone,

1. What is the difference between mineral, ore and rock? Minerals are naturally occurring inorganic solids with a crystalline structure and a definite range of chemical formula. Ores are concentrations of minerals in rock that are high enough to be economically extracted for use.

where is lithium used in the body?

Answers

Answer:

Lithium is a naturally occurring alkali metal, which living organisms ingest from dietary sources and which is also present in trace amounts in the human body. In much higher concentrations, lithium is effective as a medication for mania and mood swings including manic depressive disorders

A student places a small amount of water in a glass dish and then carefully places a small paperclip on the surface of the water. The paperclip floats. What happens if the student adds a drop or two of dish soap to the water?

Answers

Answer:

Adding soap would cause the paper clip to fall through the water and onto the base of the dish because soap is a surfactant.

Explanation:

The concept surface tension is used here to determine what happens to the paperclip when a drop of dish soap is added to the water. Here the paperclip sink into the water.

What is surface tension?

The property exhibited by the surface of a liquid in order to resist the action of an external force because of the cohesive nature of the molecules is known as the surface tension. Due to this property the surface of a liquid behaves as an extended elastic membrane.

The paperclip float on water because of the high surface tension as the water molecules at the surface are strongly attracted among themselves. But on adding one or two drops of dish soap to water causes the paperclip to sink.

The addition of the drops of dish soap to the water weakens the attraction among the water molecules and thereby lowers the surface tension. As a result of this the surface film disappears and the paperclip sink into the water.

Thus the paperclip fall into the water when a drop of dish soap is added to the water.

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Describe the transmission of sound through solids,liquids,and gases.​

Answers

I tihink it will help you

Which of the following is true about metals?
A. They are usually less reflective in luster than metalloids.
B.
They are usually better conductors than nonmetals.
C. They are usually less malleable than nonmetals.
D.
They are usually more brittle than metalloids.

Answers

B. They are usually better conductors than nonmetals

Which statement describes a molecule that has a trigonal pyramidal molecular shape?
The molecule has a trigonal planar electron domain geometry with one lone pair.
O The molecule has a tetrahedral electron domain geometry with one lone pair.
O The molecule has a trigonal planar electron domain geometry with two lone pairs.
O The molecule has a tetrahedral electron domain geometry with two lone pairs.

Answers

The statement describes a molecule that has a trigonal pyramidal molecular shape is "The molecule has a trigonal planar electron domain geometry with two lone pairs".

So, option C is correct one.

What is difference between shape and geometry of the molecule?

In finding geometry of the molecule, lone pairs and bond pairs both are included but in finding shape of the molecule only bond pairs are are involve.

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Answer:C

Explanation: Took the test

Consider the following unbalanced equation.
Ca(OH)2 + (NH2)2SO4 → CaSO4 + NH3 + H2O

Help for 70 points please explain why too.

Answers

Answer:

1   Ca(OH)2 + 1  (NH4)2SO4   ---> 1 CaSO4 + 2 NH3 + 2 H2O

Explanation:

The photo I attached should make more sense as an explanation.

When balancing equations, the first and most important step is to count the # of each type of element on each side.

In this problem there are 5: Ca, O, H, N, and S.

Once you do that you can begin balancing.

Here is the initial tally for the elements in this problem:

On the left.....

Ca - 1

N - 2

S - 1

O - 6

H - 10

On the right.....

Ca - 1

N - 1

S - 1

O - 5

H - 5

Looking at these values, we can see N, O, and H all need adjusting the right side. You should never start balancing with O or H unless they are the only elements that need adjusting. They usually balance out with the rest of your work or with water in the end.

So given all of that, you should start balancing with N on the right. Giving NH3 a coefficient of 2 will change the number of Nitrogen atoms on the right to 2. Be careful though! It will also change the number of Hydrogen atoms from 5 to 8 (because (2*3) =6 and 6+2 =8).

Let's tally our numbers again.

On the left..... (these should be unchanged)

Ca - 1

N - 2

S - 1

O - 6

H - 10

On the right.....

Ca - 1

N - 2

S - 1

O - 5

H - 8

Okay, now we see only O and H need adjusting on the right. Luckily there is H2O so we can do that without impacting the number of other atoms.

Give H2O a coefficient of 2 and count the number of atoms on the right again.

On the right.....

Ca - 1

N - 2

S - 1

O - 6 (because 4 from CaSO4 plus 2 from 2H2O = 6)

H - 10 (6 from NH3 plus 4 from 2H2O = 10)

Do these numbers match what you have on the the left side of the equation? Yes! It is balanced so you do not need to adjust anymore. Your coefficients in the answer will be 1-1-1-2-2.

What is the density of nitrogen gas if 0.256g occupies a volume of 100mL?

Answers

Answer:

The answer is 0.00256 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question we have

[tex]density = \frac{0.256}{100} \\ [/tex]

We have the final answer as

0.00256 g/mL

Hope this helps you

Which food molecules are outside of the tube

Answers

Answer:

Absorption

Explanation:

I think from Quizlet

Match the terms below to the correct definitions
3. Atom
1. The mass on the periodic table.
b. Electrons
2. Region surrounding the nucleus where electrons are found.
C. Protons
3. Positively charged center of an atom.
d. Neutrons
4. Particles that differ in number between isotopes.
e. Electron
cloud
5. Vertical column in the periodic table.
1. Nucleus
6. Positively charged particles in an atom.
R. Quark
7. Negatively charged particles in the outermost energy levels of the electron cloud.
8. Table that organizes the elements by properties.
9. Atoms of the same element that have different masses.
h. Atomic
number
1. Mass number
10. Smallest known particle that makes up protons and neutrons.
j. Average
atomic mass
11. All elements in the same one of these has the same number of energy levels in
their electron cloud.
k. Isotopes
12. The smallest form of matter that still retains the properties of an element.
1. Valence
electrons
13. Negatively charged particles in an atom.
m. Group
14. The sum of protons and neutrons in an atom.
n. Period
15. Represents the identity of an element.
o. Periodic
Table

Answers

Answer:

Explanation:

1=i

4=d

5=m

6=c

8=o

9=j

10=a

13=b

14=h

15=l

Theses are the ones i knew

What information does a subscript in a chemical formula provide? Choose all that apply. * The charge of that atom while in the compound How many of each atom are present in the compound How many valence electrons each element has while in the compound How many valence electrons each element starts with In ionic, the simplified ratio of atoms in relation to each other

Answers

Answer:

B. How many of each atom are present in the compound

D. the simplified ratio of atoms in relation to each other

Explanation:

In a chemical formula, chemical elements or atoms are represented by a chemical symbol for example Fe for iron and Na for sodium, and the number of each atom is represented by a subscript such as CO2, where 2 is a subscript representing 2 atoms of oxygen.

A subscript represents the number of each atom in the compound and the simplified ratio of atoms in relation to each other. The simplified ratio of atoms in relation to each other means subscript shows the contribution of both the atoms in the compound, for example: N2 + 3H2 => 2NH3, it means the subscript showing the ratio or proportionate of atoms that is 2:2 for both nitrogen and hydrogen.

The subscript is always written below and to the right of the chemical symbol.

Hence, the correct answer is "B. How many of each atom are present in the compound and D. the simplified ratio of atoms in relation to each other"

While designing his recording studio, Brian was trying to determine what type of surface he should use for his studio walls. He wanted to be able to produce clear, crisp, sound. So he needed a surface that wouldn't cause his music to echo. What type of surface should Brian use for his studio walls?

Answers

Answer: Acoustic Foam.

Explanation:

Acoustic Foam: This is a kind of material, which is commonly known as it called a Studio Foam, it has a kind of wedge or pyramid shape that plays a big role in absorbing sound. Brian would have to use acoustic foam by placing them round the walls and ceiling as this would stop any echoing sound and in return give a crisp and clear sound when music is been played it the studio.

Why Hund's Rule is called maximum spin multiplicity rule?​

Answers

Answer:

The rule states that for a given electron configuration, the lowest energy term is the one with the greatest value of spin multiplicity. This implies that if two or more orbitals of equal energy are available, electrons will occupy them singly before filling them in pair

Explanation:

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