All categories

3 years ago

HURRY I WILL GRANT 100 PTS AND BRAINLIEST

Chemistry

1 answer:

Zanzabum3 years ago

4 0

Answer:

Occurs when a scientists expectations change how the results of an experiment are viewed Constant In an experiment, a variable that does not change when other variables change.

Explanation:

A hypothesis (plural hypotheses) is a proposed explanation for a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it. Scientists generally base scientific hypotheses on previous observations that cannot satisfactorily be explained with the available scientific theories. Even though the words "hypothesis" and "theory" are often used synonymously, a scientific hypothesis is not the same as a scientific theory. A working hypothesis is a provisionally accepted hypothesis proposed for further research, in a process beginning with an educated guess or thought.

You might be interested in

What is the job of these macromolecules

Ray Of Light [21]

Answer:

<u>When small organic molecules bind together, they form larger molecules called biological macromolecules.</u>Biological macromolecules are important cellular components and perform a wide array of functions necessary for the survival and growth of living organisms. The four major classes of biological macromolecules are carbohydrates, lipids, proteins, and nucleic acids.

(i hope this helps)

5 0

4 years ago

Cobalt-60 is produced by neutron activation. in this process, one neutron is absorbed by the nucleus of the parent isotope. what

kkurt [141]

The parent isotope is cobalt-59 (see the picture below).

The mass number is 59 and atomic number is 27 of the parent isotope.

Neutron activation is the process in which atomic nucleus capture free neutron or neutrons.

Cobalt-60 is produced in nuclear reactors in process of neutron activation from parent isotope cobalt-59 (see the picture below).

Atomic number (Z) is total number of protons and mass number (A) is total number of protons and neutrons in a nucleus.

Cobalt-59 and cobalt-60 are the isotopes of chemical element cobalt.

Isotopes are chemical elements with same atomic number (Z), but different mass number (different number of neutrons).

More about isotopes: brainly.com/question/364529

#SPJ4

6 0

1 year ago

Explain why the boiling point of H2S with relative molecular mass 34 is lower than that of H2O with relative molecular mass 18

Levart [38]

Answer and Explanation:

In H2O molecules, due to formation of intermolecular hydrogen bonds, there is molecular association. Large amount of energy is required to break these intermolecular hydrogen bonds. Intermolecular hydrogen bonding is not possible in H2S. Hence, its boiling point is lower and is a gas.

4 0

4 years ago

In water, mgcl2 dissociates into mg2+ and cl-. Based on this information what type of bond is involved in the formation of mgcl2

s344n2d4d5 [400]

<h3>Answer:</h3>

Ionic Bond

<h3>Explanation:</h3>

Types of Bonds can be predicted by calculating the difference in electronegativity.

If, Electronegativity difference is,

Less than 0.4 then it is Non Polar Covalent Bonding

Between 0.4 and 1.7 then it is Polar Covalent Bonding

Greater than 1.7 then it is Ionic Bonding

For Mg and Cl,

E.N of Chlorine = 3.16

E.N of Magnesium = 1.31

________

E.N Difference 1.85 (Ionic Bond)

<h3>Conclusion:</h3>

MgCl₂ being ionic in nature when dissolved in water dissociates into Magnesium and Chloride ions respectively.

6 0

3 years ago

During which moon phase do spring tides occur?

mihalych1998 [28]

Answer:

New Moon

Explanation:

Spring tides occur during new moons when the Sun and the moon are aligned, Pulling together creating big tides.

3 0

3 years ago

Read 2 more answers