Carefully looking at an object or process

Answers

Answer 1

Answer: observation

They utilize and make use of the scientific method in order to have clear basis and evidence for their investigations. Research method is always used to answer every scientific inquiry and in gaining evidential data or knowledge. The scientific method has the following process or at least undergoes the process of
1. Observation
2. Hypothesis
3. Experimentation
4. Interpretation of data
5. Evaluating the data
6. Passing and recording the data

These steps are crucial and the empirical data that these scientists obtain are very important to keep that is why research paper, thesis and dissertations exists.

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Which of the following can be produced at an ocean continental convergent boundary,_______________ ??????????????????HELP!
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Given the balanced equation representing a reaction:Fe(s) + 2HCl(aq) → FeCl2(aq) + H2(g)This reaction occurs more quickly when powdered iron is used instead of a single piece of iron of the same mass because the powdered iron(1) acts as a better catalyst than the single piece of iron(2) absorbs less energy than the single piece of iron(3) has a greater surface area than the single piece of iron(4) is more metallic than the single piece of iron
A factory at a low elevation ships bags of popcorn to cities at high elevations. Why does the factory manager need to monitor the amount of air in each bag

When molten material hardens and cools, what type of rock is formed?

Answers

Should be an igneous rock.

Grace is given a piece of wood, an iron nail, and a styrofoam cup. She puts these objects into a bucket of water and observes that the nail sinks to the bottom, the wood floats just under the surface, and the cup floats on top of the water. What property is being demonstrated by this experiment.A) density
B) melting point
C) solubility
D) temperature

Answers

Answer:

Explanation:

because the Styrofoam cup is less dense than the water it floats and because the nail is more dense it sinks

The answer to this question is a

Which nuclear decay emission consists of energy, only?(1) alpha particle (3) gamma radiation
(2) beta particle (4) positron

Answers

Answer: (3) gamma radiation

Explanation:

An isotope can decay in 4 process:

1.) Alpha decay: In this process, alpha particles is emitted when a heavier nuclei decays into lighter nuclei. The alpha particle released has a charge of +2 units.

$_Z^A\textrm{X}\rightarrow _(Z-2)^(A-4)+_2^4\alpha$

2.)Beta-decay: In this process, a neutron gets converted into a proton and an electron releasing a beta-particle. The beta particle released carries a charge of -1 units.

$_Z^A\textrm{X}\rightarrow _(Z+1)^A\textrm{Y}+_(-1)^0\beta$

3.) Gamma ray emission: in this process, an unstable nuclei gives off excess energy by a spontaneous electromagnetic process and releases $\gamma -radiations$ . These radiations does not carry any charge and are electrically neutral.

$_Z^A\textrm{X}^*\rightarrow _Z^A\textrm{X}+_0^0\gamma$

4.) Positron decay: In this process, a proton gets converted to neutron and an electron neutrino and releases positron particles. This particle carries a charge of +1 units.

$_Z^A\textrm{X}\rightarrow _(Z-1)^A\textrm{Y}+_(+1)^0e$

In the question, it is given that when an isotope decays, it emits only energy. It is released when an isotope undergoes gamma decay and therefore, the correct answer is gamma radiation.

(3) gamma radiationIt is Electromagnetic energy only

Amber was used by the Greeks to study? A.) metallurgy B.) magnetism C.) static charge D.) Jewelry Making

Answers

Answer:

The correct option is C.) static charge

Explanation:

Rubbing certain objects together, such as an amber bar with a bar covered with wool or skin, resulted in small charges that attracted small iron objects. By rubbing the bars together for a long time, it could cause a spark to appear.

Have a nice day!

A) Metallurgy

I hope this one is the correct one , its been a while sine I did history .

Good Luck!

3.50 L of 0.200 M hydrochloric acid is prepared using 12.0 M HCl(aq) stock solution to which water is added. What volume of the stock solution
is required?

a. 7.00 mL
b. 8.40 mL
c. 17.1 mL
d. 58.3 mL

Answers

Answer:

Explanation:

To determine the volume of the stock solution required to prepare 3.50 L of 0.200 M hydro chloric acid, we can use the formula:

M1V1 = M2V2

where:

M1 = concentration of the stock solution

V1 = volume of the stock solution

M2 = desired concentration of the diluted solution

V2 = desired volume of the diluted solution

Let's substitute the given values into the formula:

M1 = 12.0 M

V1 = ?

M2 = 0.200 M

V2 = 3.50 L

Now we can solve for V1:

12.0 M x V1 = 0.200 M x 3.50 L

V1 = (0.200 M x 3.50 L) / 12.0 M

V1 = 0.0583 L

To convert the volume from liters to milliliters, we multiply by 1000:

V1 = 0.0583 L x 1000 mL/L

V1 = 58.3 mL

Therefore, the volume of the stock solution required is 58.3 mL.

So, the correct answer is d. 58.3 mL.

To determine the volume of the stock solution required, we can use the formula:

Molarity1 x Volume1 = Molarity2 x Volume2

Where Molarity1 and Volume1 represent the initial concentration and volume, and Molarity2 and Volume2 represent the final concentration and volume.

Given:

Molarity1 = 12.0 M

Volume1 = ?

Molarity2 = 0.200 M

Volume2 = 3.50 L

Plugging in the values into the formula, we have:

12.0 M x Volume1 = 0.200 M x 3.50 L

Simplifying the equation, we can solve for Volume1:

Volume1 = (0.200 M x 3.50 L) / 12.0 M

Volume1 ≈ 0.0583 L

To convert this to milliliters, we multiply by 1000:

Volume1 ≈ 58.3 mL

Therefore, the volume of the stock solution required is approximately 58.3 mL.

The closest answer option is d. 58.3 mL.

I hope this explanation helps! Let me know if you have any further questions.

Which is the smallest unit of ionic compound.a) Atom
b) ion
c) Free radical
d) None

Answers

Answer:

Explanation:

None of the following options are ionic compounds

Other Questions

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What is the name of the chemical NaSO3?

An automobile antifreeze mixture is made by mixing equal volumes of ethylene glycol (d = 1.114 g/mL; M = 62.07 g/mol) and water (d = 1.00 g/mL) at 20°C. The density of the mixture is 1.070 g/mL. Express the concentration of ethylene glycol as (a) volume percent 50 % v/v (b) mass percent 52.7 % w/w (c) molarity M (d) molality m (e) mole fraction

When calculating total valence electrons, extra electron pairs are added to which atom?a. Central b. Inside c. Outside d. Upper