what should you do if your bunsen burner does not light after a few tries with the striker?

Answers

Answer 1
If the burner doesn't light after several strikes, turn the gas off at the source. Verify that you are generating sparks when striking the striker, and check that the barrel is all the way down and the needle valve is open by the specified amount. If these check out, the problem may be insufficient gas flow.

Related Questions

Pls help if you only know the correct answer! Thanks!!

Answers

Answer:

1. H=2, O=1

2. H=4, O=2

3. C=1, O=1

4.

a. reactants C=1, O=2

b. products C=1, O=2

5.

a. reactants H=4, O=2

b. products H=4, O=2

6

a. reactants C=1, O=1, H=4

b. products C=1, O=1, H=4

Anyone down to start a convo

Answers

Yeah sure............

4. Which of the following statements accurately compares the wavelengths of the waves shown below?

A) wave 1 has a smaller wavelength than wave 2

B) wave 1 has a larger wavelength than wave 2

C) wave 2 has a larger wavelength than wave 1

D) wave 1 and wave 2 have the same wavelength

Answers

Answer:

B. wave 1 has a larger wavelength than wave 2

Wave 1 has larger wavelength than wave 2. Hence, option B is correct.

What is Wavelength?

Wavelength is defined as "the difference between two successive crests and troughs of the wave. The wavelength described the how long wave is. It is measure in the direction of wave.

Wavelength is usually denoted by the Greek letter ( λ ).

Wavelength is equal to the speed ( V ) of wave train to divided by frequency ( F ). It is given as,

λ = V ÷ F

Here,

λ = wavelength

V = speed

F = frequency

The distance between one crests (top) to another crests is a Wavelength. Alternately the distance between one troughs (bottom) to another troughs is wavelength.

The distance between two  crests in wave 1  is more comparatively wave 2 so , wave 1 will have larger wavelength than wave 2.

Therefore, wavelength is used for measuring the radiation.

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Mercury is an environmental pollutant that is produced by the burning of
fossil fuels and can be toxic to wildlife and humans. What does this show
about the impact of chemicals on the environment?
A. The harm chemicals could have on the environment outweighs the
benefits that people get from the chemicals.
B. People cannot control the negative effects of chemicals on the
environment.
C. All chemicals that people introduce into the environment are
harmful.
D. The beneficial effects people get from chemicals may have
unintended harmful effects on the environment,

Answers

C! I just took the test :) good luck

You are studying the boiling points of liquids with some fellow students. You have two liquids of different molecular weights, and you test each of them twice. You find that the one with a lower molecular weight also has a lower boiling point. You would like to be more confident with the pattern you are noticing. What are two possible next steps? In one to two sentences, give specific, different examples of how the experiment could be extended, assessed, or improved.

Answers

The boiling points of two or three other pairs of liquids in which one liquid has a lower molecular mass than the other can be studied in order to see if the pattern is consistent.

The boiling point of a substance refers to the temperature at which its vapor pressure is equal to the atmospheric pressure. The boiling point of a substance has a lot to do with its molecular mass.

Generally, substances that has a higher molecular mass has a higher boiling point except other factors at at work. In order to confirm whether the pattern that you are noticing about molecular weights and boiling point is consistent, three other liquids with different molecular masses, one being higher than the other can be studied and their boiling points compared.

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What happens to the molecules of a gas when the gas is heated?
A.
The gas becomes a liquid.


B.
The molecules collide less frequently.


C.
No change occurs with regard to the molecules.


D.
The average speed of the molecules increases.



Answers

Answer of this question is D

Answer:

the correct answer is D because the heat causes the molecules to speed up

perform the converters
a) 32gr C2H4-in liters
b) 7,5 litera N2- in molecules
c) 1.4•10 ² ³ molecules CH4- in atoms

Answers

Answer:

the answers are given in the photo

significance of symbol Mg​

Answers

Answer:

Magnesium

Magnesium is used in products that benefit from being lightweight, such as car seats, luggage, laptops, cameras and power tools. It is also added to molten iron and steel to remove sulfur. As magnesium ignites easily in air and burns with a bright light, it's used in flares, fireworks and sparklers.

I hope this helps you !!
It’s magnesium and magnesium is magnetic

why is it impossible to have an undiscovered element that would fit between sodium and magnesuim

Answers

Answer:

Sodium has 11 protons and Magnesium has 12. The way that the periodic table is set up doesn't allow for any elements to be in between. The element would have to have 11.5 protons, which is impossible

Structure of periodic table is designed in a way that successive elements have difference of 1 electron and proton as sodium and magnesium have 11 and 12 protons respectively there is no space for any other element.

What is periodic table?

Periodic table is a tabular arrangement of elements in the form of a table. In the periodic table, elements are arranged according to the modern periodic law which states that the properties of elements are a periodic function of their atomic numbers.

It is called as periodic because properties repeat after regular intervals of atomic numbers . It is a tabular arrangement consisting of seven horizontal rows called periods and eighteen vertical columns called groups.

Elements present in the same group have same number of valence electrons and hence have similar properties while elements present in the same period show gradual variation in properties due to addition of one electron for each successive element in a period.

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What is the chemical reaction by which organisms break down food
molecules for energy?


Answers

Answer:

cellular respiration

Explanation:

hope this helps :)

brainliest plzzzzzzz

Which property determines whether a substance is a solid or liquid at room temperature?

Answers

Answer:

1. The kinetic energies of the particles (atoms, molecules, or ions) that make up a substance. Kinetic energy tends to keep the particles moving apart.

2. The attractive intermolecular forces between particles that tend to draw the particles together.

Tell me What is an element?

Answers

Answer:

Any substance that cannot be decomposed into simpler substances by ordinary chemical processes.

Another definition:

An element is the simplest pure substance which can neither be split nor built up from other simpler substances by chemical reaction

in three to five sentences, predict the bonding activity between phosphorus and chlorine. why do you think they would bond that way?​

Answers

The bonding activity that occurs between phosphorus and chlorine is Covalent Bonding

Covalent bonding is an interaction between two atomic elements that share electrons between themselves.

In Phosphorus Pentachlorine PCl₅, covalent bonding occurs between Phosphorus and Chlorine.

This is because, Phosphorus is the central atom that is attached to 5 different chlorine atoms, each chlorine atom needs one electron each to complete its octet rule and since phosphorus has five valence electrons in its outermost shell, it shares it with each of the chlorine atoms.

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Answer:

Covalent Bonding

most common elements that bond with oxygen

Answers

Explanation:

most common elements that bond with oxygen is Hydrogen (H2) to form water

As atoms get smaller,valance electrons are getting closer or farther away?

Answers

Answer:

valence electrons get closer but rest of them are remain same

They are getting closer and the force of attraction is getting weaker

If the energy of the H–H bond is 452 kJ/mol. The energy of the O=O bond is 598 kJ/mol. The energy of the O–H bond is 367 kJ/mol, which bond would be the strongest? Which bond would be the weakest?

Answers

Taking into account the bond energy, the O=O bond is the strongest and the O–H bond is the weakest.

The bond energy is the average total energy that would be released by the formation of a mole of chemical bonds, from their constituent fragments (all in the gaseous state).

In other words, the normal or standard bond enthalpy is defined as the change in enthalpy or heat released, under standard conditions of 1 atmosphere and 25ºC, that accompanies the reaction of formation of one mole of bonds from the isolated atoms in gaseous state.

The higher the bond energy, the stronger and more stable the bond will be.

So, taking into account all the previous, the O=O bond is the strongest and the O–H bond is the weakest.

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A 24.81-g sample of a gaseous compound containing only carbon, oxygen, and chlorine is determined to contain 3.01 g C, 4.00 g O, and 17.81
g Cl. What is this compound's percent composition?

Answers

Explanation:

getting the empirical formula

For carbon

3.01/12 = 0.2508

For oxygen

4/16 = 0.25

For Cl

17.81/35.5= 0.501

0.2508 ÷ 0.25 = 1.0032

0.25 ÷ 0.25 = 1

0.501 ÷ 0.25 = 2.004

Empirical formula of the compound = CCl20

Molar mass = (1×12) + (2×35.5) + (1×16)

= 12 + 71 + 16

= 99g/mol

percentage composition= 24.81/99 × 100

= 25.06%

A 24.81-g sample of a gaseous compound containing only carbon, oxygen, and chlorine is determined to contain 3.01 g C, 4.00 g O, and 17.81 g Cl. the compound's percent composition is  25.06%.

What are the application of carbon ?

The impure form of carbon is Amorphous which is used for the manufacture of car batteries and dry cells, ink and paints; So the majority element of carbon is present in charcoal, so these are used as fuel.

Graphite is derivative form of carbon used as a lubricant in heavy industrial machinery, making pencil leads, these carbon are used in the production of steel.

The empirical formula, For carbon 3.01/12 = 0.2508

For oxygen 4/16 = 0.25, For Cl 17.81/35.5= 0.501, 0.2508 ÷ 0.25 = 1.0032

0.25 ÷ 0.25 = 1

0.501 ÷ 0.25 = 2.004

Empirical formula of the compound = CCl20

Then the Molar mass = (1×12) + (2×35.5) + (1×16)

= 12 + 71 + 16

= 99g/mol

percentage composition= 24.81/99 × 100

= 25.06%

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The atomic mall mass is an element depends upon the.

Answers

Answer:

Mass and relative abundance of each isotope of that element

The atomic mass of element has been dependent on  mass of each isotopes and their abundance in nature.

The atomic mass has been the mass of neutrons and protons of the element. There has been the presence of the isotopes of the elements, with varying abundance, and varying atomic masses.

The atomic mass of the element has been the relative average atomic mass of the element with respect to the mass of the isotopes and their percent abundance.

The average atomic mass (amu) has been given by:

[tex]amu=M_1A_1\;+\;M_2A_2[/tex]

Where, [tex]M_1A_1[/tex] has been the atomic mass and abundance of isotope 1.

[tex]M_2A_2[/tex] has been the atomic mass and abundance of isotope 2.

Thus, the average atomic mass has been dependent on mass of each isotopes and their abundance in nature.

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What causes an echo?


refraction


rarefaction


reflection


please help

Answers

The answer is reflection
Answer:
Reflection

Reason:

Reflection is like looking at yourself through a mirror, so it would be the same for sound. And sound waves are REFLECTED back

What is the enthalpy of reaction for the decomposition of calcium carbonate? CaCO3(s) Right arrow. CaO(s) CO2(g) kJ.

Answers

The enthalpy of reaction for the decomposition of calcium carbonate is 177.4  KJ/mole .

We know that the enthalpy of reaction can be obtained from the enthalpy of formation of the reactants and that of the products using the formula;

ΔHrxn = ΔHf (products) - ΔHf (reactants)

The heat of formation of the species are as follows;

ΔHf (CaCO3(s)) = −1206.9 KJ/mol

ΔHf (CaO(s)) =  - 636 KJ/mole

ΔHf (CO2(g)) = -393.5  KJ/mole

ΔHrxn = [( -393.5  KJ/mole ) + ( - 636 KJ/mole)] - [ −1206.9 KJ/mol]

ΔHrxn = 177.4  KJ/mole

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Answer:

First one is 656.3 and second is endothermic.

Explanation:

Edge Thermochemical Equations assignment

as the atoms of the elements from atomic number 3 to 9 are considered in sequence from left to right on the periodic table, the atomic radius of each successive atom is

Answers

Answer:

decreasing

Explanation:

from left to right the nuclear effective charge is increasing, attracting with a greater force the electrons and making the atom to reduces itd atomic radius

The atomic radius decreases along a period in periodic table.  Thus, from the third element Li to the 9th element fluorine, atomic radius decreases and F has the lowest radius among them.

What is atomic radius?

Atomic radius is the distance from the  nucleus to the valence shell. The atomic radius decreases from left to right in periodic table. Thus, the higher atomic radius is exhibited by metallic elements.

The horizontal rows in the periodic table is called periods. Along a period , atomic radius decreases and electronegativity increases. When moving to the right there is no increase in the number of shells and the filling of electrons does not achieve octet except for group 18. Hence, they are electronegative.

From atomic number 3 to 9 atomic number is decreasing. Hence, among these elements, the smallest one is fluorine (Z = 9).

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what was johann dobereiner contribution to the periodic table

Answers

Answer:

he introduced triads of similar chemical properties in periodic table.

Explanation:

Pls help if you only know the correct answer! Thanks! :)

Answers

Answer:

i think itd be an  exothermic reaction

Explanation:

An exothermic process releases heat, causing the temperature of the immediate surroundings to rise.

True or false: The
louder you yell into a
megaphone in space,
the more likely it is for
the sound waves to
travel.

Answers

Answer:

True

Explanation:

This is known as a lapse rate. When you shout something to someone across the lake, the sound waves near the surface end up moving faster than the sound waves higher up. Since the speed is greatest near the ground, sound waves bend upward, causing the audio to be just out of ears reach.

PLEASE HELP!!!
ILL MARK AS BRAINIEST AND GIVE YOU 30 POINTS!!!

Answers

Answer:

did u get it yet

Explanation:

Two students are exploring a creek in their neighborhood.

The students hope to find some fossils along the way. What kinds of rocks should the students look for on their hike, and why should they look for those kinds of rock?​

Answers

Metamorphic igneous and sedimentary rocks

two step mole conversions, giving brainliest

Answers

Answer:

Our process will be to change the mass of NO2 to moles by dividing by the molar mass, and then we multiply the number of moles with Avogadro's number (6.02 x 10^23)

Molar mass of NO2 = (14) + (16)x2 = 46g/mol

45.8/46 = 0.99 or just 1 mole when you round it.

Now just multiply the moles with Avogadro's number

1 x (6.02 x 10^23)

= 6.02 x 10^23 molecules of NO2 reside in 45.8g of NO2

plzzzzzzzz helpppp

The half-life of a radioactive isotope is 2.4 minutes. If you started with 100.0 grams, how many grams would be left after 7.2 minutes has elapsed? Explain how you arrived at your answer.

Answers

Answer:

12.5grams would remain after time has elapsed

Look at the diagram. Which shows the correct arrangement of electrons in a hydrogen chloride molecule?

Answers

Answer:

D............................

There are two types of chemical compound one is covalent compound and another is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. The correct representation is option D.

What is chemical Compound?

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

Covalent bond is present in molecule HCl. Hydrogen has 1 electron in its outermost shell. Chlorine has 7 electrons in its valence shell. So one one electron from each element is shared between them to form a covalent bond.

Therefore, the correct representation of arrangement of electrons in a hydrogen chloride molecule is option D.

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How many molecules are in 0.750 moles of magnesium sulfide?

Answers

Answer:

4.51 x 10 to the 23 power

Explanation:

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Which war led to the US participating in an international peace conference? Read the passage from Hamlet, Act I, Scene iii. Hamlet:. But tell Why thy canonizd bones, hearsed in death, Have burst their cerements; why the sepulchre, Wherein we saw thee quietly inurnd,55 Hath opd his ponderous and marble jaws, To cast thee up again. What may this mean, That thou, dead corse, again in complete steel Revisitst thus the glimpses of the moon. Which phrases provide clues that sepulchre means "grave"? Check all that apply. Canonizd bones hearsed in death we saw thee ponderous and marble jaws the glimpses of the moon. Factorize the expressionspx2 + qx A complex shape with measurements 6 inches, 5 inches, 4 inches, 3 inches, 4 inches, 2 inches, 6 inches, 10 inches. What is the perimeter of the shape? Write a story extension of either Like the Sun or The Open Window. You can choose to focus your story on one of 3 characters - Sekhar, Mr. Nuttle, or Vera and what happens with them next. For Sekhar, it is the next day and he now has to deal with the fallout from his day of truth-telling...with his wife, his co-workers, and the headmaster. For Frampton Nuttle, what happens to him after he runs out of the house. Finally, for Vera, what does she tell her Aunt and Uncle after Frampton has run out of the house in complete terror.No links and don't answer if you don't know what to writeI will mark Brainliest, I will also report if you write something foolishNeed this ASAP, Thank you Stuart McGregors goal was to be a chef, and he received a highly prestigious apprenticeship just before turning 17. Soon after starting his apprenticeship, he Experienced verbal abuse at work, and colleagues began making innuendos about his sexuality. He was once given a large bag of peas by the kitchen managers and asked to count them.McGregor was told by his colleagues that he was going to receive an award. Excitedly, he called his family and could not wait to receive the award later in the day. Unknown to him, however, his peers had broken into his car and stolen the knob of his gear stick. They then wrapped it up and gave it to him as his award in front of the entire staff.McGregor was regularly asked to perform tasks he did not know how to do and then was ridiculed when he did them incorrectly. Shortly before the conclusion of the apprenticeship period, he was invited to go on a camping trip with his workmates. Sadly, the kitchen managers threatened him with bodily harm if he went. McGregor was afraid for his safety and made excuses to avoid the trip.Another employee ultimately complained about being bullied, and investigators questioned McGregor about his experience. He denied being bullied, probably out of fear for his safety, fear of losing his job, or because he thought he could handle the situation.Consider how you might have resolved the situation faced by Stuart McGregor. Applying the 3-Step Problem-Solving Approach1. Define the problem in this case.2. Identify what OB concepts or theories help explain McGregors situation and reaction.3. Recommend what you would do if you were McGregor and also if you were the manager of therestaurant.Prepare a 15-minute PowerPoint presentation on your approach indicating the problem, the theories you will use to explain the problem and the recommendations you will suggest. Find the solution(s) for x in the equation below.x2 25 = 0 Solve 4,200 70 = ________. Rewrite as a fraction to help you. PLEASE HELP!!! I ONLY HAVE A FEW MINUTES!! PLEASE HELP NOW If YOU KNOW YOUR RIGHTWhat are the FOUR geographical regions of Honduras?interior highlandsMosquito Coastrain forestCoastal plainsPacific lowlandssemiarid desertsCaribbean lowlands The ___________________ contains receptors for monitoring the position of the head. What is unique about Indian people? Sulfur reacts with oxygen to form sulfur dioxide (SO2(g), Delta. Hf = "296. 8 kJ/mol) according to the equation below. Upper S (s) plus upper O subscript 2 (g) right arrow upper S upper o subscript 2 (g). What is the enthalpy change for the reaction? Use Delta H r x n equals the sum of delta H f of all the products minus the sum of delta H f of all the reactants. "593. 6 kJ "296. 8 kJ 296. 8 kJ 593. 6 kJ. how to get anything you want? Use a graphing calculator to approximate the vertex of the graph of the parabola defined by the following equation. Y = x squared + x + 6 a. (0. 5, -5. 75) c. (-0. 5, 6) b. (-0. 5, 5. 75) d. (0. 5, 5. 75). We need to use 60 yards of fencing to enclose a rectangular shaped garden the length is 30 yards less than twice the width. Find the dimensions of the garden. Y=-3x+1 y+5=-3(x-2) what do the following two equations represent A)The same line B)Distinct parallel lines C)Perpendicular Lines D)Intersecting, but not perpendicular lines ANSWER IT!!! I ONLY HAVE MINUTES how do I do this question? Match the following regulations to their appropriate categories.