1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ozzi
3 years ago
6

If velocity is positive, which would most likely yield a negative acceleration?

Chemistry
2 answers:
Sophie [7]3 years ago
8 0

Answer:

an initial velocity

Explanation:

i just took the test hope this helps!!!

Viktor [21]3 years ago
5 0

Answer: An initial velocity

Explanation:

You might be interested in
5. What is the molar mass of ethanol (C2H5OH)?
AVprozaik [17]
<h2>D) 46.07 g/mol</h2>

The molar mass is given by the sum of the atomic masses of the component elements of the substance.

In our case, the substance is ethanol or C₂H₅OH.

A_C=12.011

A_H=1.0079

A_O=15.9994

\mathcal M_{C_2H_5OH} = 2 \times A_C + 6 \times A_H + A_O = 2 \times 12.011 + 6 \times 1.00079+ 15.999 4= 24.022 + 6.0474 + 15.9994= 46.069≈ \boxed{46.07 \dfrac{g}{mol}}

5 0
2 years ago
Dose All plants have a vascular system of pipes that transport fluids]
USPshnik [31]

Answer:

certain types of plants (vascular plants) have a system for transporting water, minerals

4 0
3 years ago
One radioactive isotope of calcium has an atomic mass of 47,how many neutrons are in the calcium -47 nucleus
jekas [21]

Answer: 27 neutrons

Explanation:

Recall that the number of protons in the nucleus of an atom = Atomic number.

Hence, Calcium with mass number 47 and atomic number 20 will have 20 protons

Therefore, since Mass number = number of protons + neutrons

47 = 20 + neutrons

Neutrons = 47 - 20 = 27

Thus, there are 27 neutrons in radioactive calcium nucleus.

6 0
3 years ago
What are the empirical and molecular formulas of a hydrocarbon if combustion of 2.10 g of the compound yields 6.59 g co2 and 2.7
mariarad [96]

 The  empirical  formula    of hydrocarbon is  CH2

The  molecular formula  of the  hydrocarbon is  C6H12


    <u><em>Explanation</em></u>

Hydrocarbon  is  made up  of carbon and hydrogen


<h3><u><em> </em></u>Empirical formula  calculation</h3>

 Step 1:  find  the  moles   CO2  and  H2O

moles =mass/molar mass

moles   of CO2 =  6.59 g/ 44 g/mol = 0.15 moles

moles of H2O = 2.70 g / 18 g/mol =  0.15  moles

Step 2: Find the moles  ratio  of Co2:H2O  by diving  each mole by smallest mole(0.15)

that  is  for  CO2 = 0.15/0.15  =1

              For H2O = 0.15/0.15 =1

therefore  the mole ratio  of Co2 : H2O = 1:1  which  implies that 1 mole of Co2  and 1  mole of H2O is  formed  during combustion reaction.


From the  the law of mass conservation the number  of atoms in reactant side  must  be equal to  number of  atoms  in product side

therefore  since  there 1 atom  of C  in product side there  must be 1 atom of C  in reactant  side.

In addition  there is 2 H atom in product  side  which should be the  same  in reactant side.  

From information above the empirical formula is therefore = CH2


Molecular formula  calculation

[CH2}n= 84 g/mol

[12+ (1x2)] n = 84 g/mol

14 n =  84 g/mol

n = 6

multiply the  each subscript  in CH2  by  6

 Therefore the molecular formula = C6H12




5 0
3 years ago
Is iornIInitrate ionic or covalent
kondaur [170]

Answer:

Iron (II) nitrate is ionic compound

Explanation:

Formula:

Fe(NO₃)₂

Iron (II) nitrate is ionic compound.

Its molecular mass is 179.85 g/mol.

NO⁻₃ is anion while Fe⁺² is cation.

Iron loses its two electron which is accepted by nitrate.

Its molecular formula can be written as FeN₂O₆.

Its color is pale green.

Its melting point is 333.65 K.

It is para magnetic compound.

it is mostly present in non hydrated form.

It is also known as ferric nitrate.

It is used to form sodium amide.

Its is also used catalyst.

7 0
3 years ago
Other questions:
  • What factors alter the equilibrium position in chemical reactions?
    11·1 answer
  • Plz help! The best answer will be marked as brainliest!
    10·1 answer
  • Foods rich in simple carbohydrates or starch but low in fat or fiber tend to
    10·2 answers
  • Pepper is trying to determine the density of her gold ring. The ring’s mass is 100 grams and the volume displaced by the ring is
    14·1 answer
  • While washing his hands before the client consultation with Chloe, Jayden dripped some water onto the countertop. When he came b
    10·1 answer
  • PLZ HELP ME IM FAILING!<br><br> Everything you need to know about the question is on the photo
    11·1 answer
  • 3 complete paragraphs on Static Electricity
    8·1 answer
  • Need help fast!!!!!!!!!!!
    14·1 answer
  • Give the correct number of significant figures in 1.900.0 kg*
    9·1 answer
  • Which tiny, round “factory” puts together protein and is often found in the endoplasmic reticulum?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!