takes Mrs. Pare' three hours to drive 175 miles from her house in Pennsylvania to her house in Maryland. What is her average speed?

Answers

Answer 1

Answer:58.33mph

Explanation:


Related Questions

Given 4.20 x 1022 molecules of He gas, what mass of He do you have?

Answers

Answer:

0.279 g He

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Atomic Structure

Reading a Periodic TableAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

Using Dimensional AnalysisExplanation:

Step 1: Define

4.20 × 10²² molecules He

Step 2: Identify Conversions

Avogadro's Number

[PT] Molar Mass of He - 4.00 g/mol

Step 3: Convert

Set up:                              [tex]\displaystyle 4.20 \cdot 10^{22} \ molecules \ He(\frac{1 \ mol \ He}{6.022 \cdot 10^{23} \ molecules \ He})(\frac{4.00 \ g \ He}{1 \ mol \ He})[/tex]Multiply/Divide:                                                                                               [tex]\displaystyle 0.278997 \ g \ He[/tex]

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

0.278997 g He ≈ 0.279 g He

Organisms that are made up of prokaryotic cells are NOT ____________.


Question 4 options:


Bacteria



Simpler than organisms made up of Eukaryotic celled organisms



All of these are true about prokaryotic cells



Multicellular

Answers

Answer:

Multicellular

they are single celled

______ meters = 177 millimeters

Answers

Answer:

117 millimeters = 0.117 meters

Explanation:

This is using unit conversions. There are 1000 millimeters in 1 meter, so you would divide your starting value, 117 millimeters by 1000 millimeters. The units will cancel because they are being divided by themselves and you are left with 0.117 meters.

Hi, help with these two questions.
1. Write the isotope notation for an atom with 9 protons and an atomic mass of 20.

2. Write the isotope notation for an atom with 13 protons and 12 neutrons.

Answers

Answer:

Answered below

Explanation:

1) Atomic number is usually the number of protons

Since the atom is a neutral atom, Number of protons is equal to the number of electrons.

Thus means that we have 9 electrons and our atomic number is 9.

Atomic mass number is given as 20.

The is topic notation makes use of the atomic number and mass number.

Atomic number of 9 denotes fluorine.

Thus, the isotopic notation is written as attached;

2) we are told that an atom has 13 protons and 12 neutrons.

Similar to A above,

Atomic number is 13.

Now, number of neutrons + number of protons = mass number.

Thus;

Mass number = 13 + 12 = 25

Element with atomic number of 12 is magnesium

Thus,isotopic notation is as attached.

(blank) are the fastest form of radiation?

Answers

Answer: Gamma particles

Answer:

Gamma rays, are the fastest.

Explanation:

They literally move at the speed of light, I hope this helps you.

Type the correct answer in the box. Spell all words correctly.

What is this process called?

*blank* involves subjecting the evidence and the reference or standard to the same tests. This process determines if two or more
objects share a common origin.

Answers

Comparison is the answer!

If a person weighs 125 pounds, 8 oz, how many mg do they weigh?

Answers

Answer:

ok so you would just weigh 125 because 16 oz is 1 pound

Explanation:

Which of the following has the smallest atomic radius?
a B
b Al
c F
d N
e Ga

Answers

Answer:

c. F

Explanation:

As you go top to bottom down a column of the periodic table, atomic radius increases.

As you go left to right across a period of the periodic table, atomic radius decreases.

Knowing this trend, that means that the smallest atomic radius would be located in the top right of the periodic table. The closest element to that point is fluorine, or answer C.

How many moles are in 88.0 g of carbon dioxide (CO2)?​

Answers

Moles of 88 grams CO₂ = 2

I think it’s D but I’m not sure.. Please help!

Answers

Answer:   I think it’s D?

Explanation:

Answer:

D.

Explanation:

Weathering, erosion and deposition are processes that can wear a mountain down.

If you find yourself rushing to complete many different tasks at once, it may be useful to
a Work at home to get each task done as soon as possible
b. Recruit another co-worker to do your normal tasks
C. Clarify the deadlines for each of the tasks with your boss
d. Stop working on the tasks until someone asks about them

Answers

Answer:

its c

Explanation:

because i have the most wrinkly brain

If you find yourself rushing to complete many different tasks at once, it may be useful to clarify the deadlines for each of the tasks with your boss.

What do you do when you have many tasks at once?

It is common in an office setting to be assigned many tasks to be completed within a short time frame. However, all these tasks must be prioritized in order.

Hence, If you find yourself rushing to complete many different tasks at once, it may be useful to clarify the deadlines for each of the tasks with your boss.

Learn more about work deadlines:https://brainly.com/question/5956140

#SPJ2

You write an invisible message on paper with lemon juice - when you heat the paper, the writing turns brown. Chemical or physical change​

Answers

Answer: Chemical Change.

Explanation: Lemon juice has properties that, when heated, turn the paper brown. In the invisible ink science experiment, that is why it is used. In lemon juice, the acid prevents peeled fruit from browning, like apples and pears. The lemon juice has a bitter taste and is acidic.

Brainlist to who gets it right first

Which feature of the leaves is an adaptation for obtaining energy
A. Their short height
B. Their large size
C. Their pointed tips
D. Their unique shape

Answers

Answer:

B their larger size . this is right

Answer:

The answer is B. here is proof. Plz mark brainliest.

Explanation:

If a section of DNA has 15% thymine, how much adenine will it have?
1. 15%
2. 30%
3. 60%
4.85%

Answers

Answer:

15% adenine

Explanation:

Thymine and adenine are a nitrogenous base pair so they would equal the same.

30% I think, although I am not quite sure

A student did an investigation to determine the effect the amount of air would have on plant growth. She planted identical
plants in 4 separate closed containers with different volumes of air. She measured the height of the plants after they had
grown for 3 weeks.
What is the dependent (responding) variable in her investigation?

Answers

Answer:

Explanation:

The responding variable always is measured against the variable that you have control over.

In this case, you have control over the volume of air.

The responding variable is the amount the plant has grown.  This would be a good long term experiment to try for a science fair or just because you might be interested. It's a good simple idea.

How do the atomic number and the mass number of an element
change after beta decay?
A. Atomic number stays the
same; mass number
increases by 1.
C. Atomic number increases by
1; mass number stays the
same.
B. Atomic number stays the
same; mass number
decreases by 1.
D. Atomic number decreases by
1; mass number stays the
same.

Answers

Answer:

A.

Explanation:

Which sample would show stronger (intermolecular) attractive forces, the cold water or the hot water?

Answers

Answer:

Cold water

Explanation:

A simple way to solve this kind of problems is to keep in mind that:

Solids have stronger intermolecular attractive forces than liquids, and liquids have stronger forces than gases.

Cold water behaves more similarly to solids than hot water. Conversely, hot water behaves more similarly to gases than cold water. Thus, cold water has stronger intermolecular attractive forces than hot water.

Help need fast !!!!!!

Answers

Answer:

Sodium oxide NA2O

2) N8CL

3) HO2

4) LISO3

Answer:

Sodium oxide NA2O

2) N8CL

3) HO2

4) LISO3

Explanation:

b. MgF2
Name the compound

Answers

Answer:

Magnesium Difluoride

Explanation:

Mg = magnesium

F = fluoride

F2 = difluoride (prefix "di" indicates 2)

Individual differences in a group is called what
A.adaptation
B.varation
C.natrual selection
D.selective breeding

Answers

I’m pretty sure it’s b

What advantage does cross pollination have over self-pollination?
1. It allows a plant to have both male and female flowers.
2. It assures that there is genetic variety within each plant species.
3. It ensures that all offspring will be identical.
4. It allows a plant to fertilize itself.

Answers

Answer:

It allows all the plants to have one genetic


What is the formula for nickel || dichromate

Answers

Answer: Cr2NiO7 is the molecular formula for nickel II dichromate.

Help!
If you were travelling at 45 miles per hour, how long would it take to travel a distance of 340 miles?

Answers

i’m pretty sure it’s 7.5 (7 and a half hours) sorry if i’m wrong

Name 5 things that the periodic table includes about 1 atom for each element:
1.
2.
3.
4.
5.​

Answers

Answer:

They are listed below

Explanation:

The 5 things that the periodic table includes are;

1. Name of the element

2. The symbol of the element

3. Atomic number of the element

4. Relative atomic mass

5. Electron configuration

What would the world be like without elements? please​

Answers

Answer:

It would be nothing. Quite literally nothing. No Oxygen, no dirt, no anything.

Explanation:

Answer:

Nothing

Explanation:

Everything we have in our world is made up of elements. Without them, we would have nothing.

pleaseeeeeeeeeeeeeeeeeeeeeeee helppppppppppp


Approximately how many grams of KBr will dissolve in 100g of water at 50C?


60g

70g

80g

90g

Answers

Answer:

the answer would be to your problem here is 90g

Explanation:

PLEASE HELP MEEEEEE< ;-(
1.What is the amount of aluminum chloride produced from 40 moles of aluminum and 40 moles chlorine?
2.What is the amount of aluminum chloride produced from 80.0 grams of aluminum and 80.0 grams chlorine?

Answers

Answer:

= 0.4448 mol

Explanation:

id.k frfr

True or False: There are five (5) of Newton's Laws of Motion *​

Answers

Answer:

False

there is three

Explanation:

Three laws are combined together which is further known to us as Newton ’s three laws of motion. These three newton’s laws of motion are: Law I – Newton’s first law of motion Law II – Newton’s second law of motion

Hope this helps :)

(Popcorn Stand) A salt shaker has 2.91 moles of NaCl, how many grams of NaCl are in the salt shaker?

Answers

Answer:

170 grams NaCl

Explanation:

Find the mass of NaCl by adding the two elements atomic mass

Na: 22.99

Cl: 35.45

22.99+35.45=58.44 g

Convert moles to grams.

2.91 mol NaCl * 58.44 g NaCl= 170.0604 g

The answer would be 170 grams NaCL

What is the chemical formula for Tetraphosphorous Pentachloride ?

Answers

Answer:

CH4

Explanation:

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