Does this chemical equation demonstrate conservation of matter? (Yes or No) How do you know this? Li2CO3 + CO2 + H2O → 2LiHCO3

Answer:

Chlorine(Cl) is a bit more negative than Sodium(Na)

Explanation:

Cl has an electronegativity of 3.0

Na has an electronegativity of 1.0

Answer:

The bond between Na & CI is ionic. One atom will form a a negative ion and the other will form a positive ion. Sodium (Na) has 1 valence electron, so it will give it away in order to become stable (octet rule). Chlorine has 7 valence electrons. So when Na and Cl bond, chlorine will take sodium's 1 valence electron and become stable. Now both atoms are stable but each form a specific ion. Since sodium lost its electron, It now has an imbalance where there are more protons than neutrons. This makes the sodium atom a positively charged ion (Na+). Since chlorine gained an electron, it now has an inbalance where there are more electrons than protons. This makes the atom a negatively charged ion (Cl-)

Answer:

Cell Wall and Chloroplast

Explanation:

Animal cells have a cell membrane, not a cell wall. Animal cells also have no chloroplast, as that is what gives plants their green colour and allows them to photosynthesize

Answer:

speed inscreases mass decrreases, but when no friciton mass dont matter

Explanation:

Mass does not affect speed directly, but it does affect how fast an object can change its speed by accelerating or decelerating. Objects with larger masses require more time for acceleration or deceleration compared to lighter objects. The law of inertia states that objects that are still remain still and that objects in motion remain in motion regardless of the object's mass.

Answer:

Electron → Negative Charge → Outside Nucleus → Less than 1 amu

Proton → Positive Charge → Inside Nucleus → 1 amu

Neutron →  No charge → Inside Nucleus → 1 amu

The atomic mass of helium is the bottom number underneath its symbol. The atomic mass is 4.0026. Since helium only have 2 protons, then helium has 2 neutrons because you subtract the atomic number from the atomic mass to find the neutron count. The atomic number is the top number above "He". The atomic number of helium is 2 and it refers to the amount of protons.

Answer:

0.282 moles

Explanation

I assume you meant How many moles is 1.7 × 10^23 atoms of Ne?

1 mole is 6.02X10^23        .Avogados number=

(1.7X10^23)/(6.02X10^23)= 0.282 moles

Answer:

[tex]\boxed {\boxed {\sf 0.28 \ mol \ Ne}}[/tex]

Explanation:

We are asked to find how many moles are in 1.7×10²³ atoms of Ne or neon.

Atoms are converted to moles using Avogadro's Number or 6.022 ×10²³. This is the number of particles (atoms, molecules, formula units, etc.) in 1 mole of a substance. For this problem, the particles are atoms of neon.

We convert using dimensional analysis, so a conversion factor (using Avogadro's Number) must be set up.  

[tex]\frac {6.022 \times 10^{23} \ atoms \ Ne}{ 1 \ mol \ Ne}[/tex]

We are converting 1.7×10²³ atoms of Ne to moles, so we multiply the ratio by this value.

[tex]1.7 \times 10^{23} \ atoms \ Ne *\frac {6.022 \times 10^{23} \ atoms \ Ne}{ 1 \ mol \ Ne}[/tex]

Flip the ratio so the units of atoms of neon cancel out.

[tex]1.7 \times 10^{23} \ atoms \ Ne *\frac { 1 \ mol \ Ne}{6.022 \times 10^{23} \ atoms \ Ne}[/tex]

[tex]1.7 \times 10^{23} *\frac { 1 \ mol \ Ne}{6.022 \times 10^{23} }[/tex]

[tex]\frac { 1.7 \times 10^{23}}{6.022 \times 10^{23} } \ mol \ Ne[/tex]

Divide.

[tex]0.2822982398 \ mol \ Ne[/tex]

The original measurement of atoms (1.7×10²³) has 2 significant figures (1 and 7). Our answer must also have 2 significant figures. For the number we found, that is the hundredth place.

The 2 in the thousandth place tells us to leave the 8 in the hundredth place.

[tex]0.28 \ mol \ Ne[/tex]

1.7×10²³ atoms of Neon are equal to approximately 0.28 moles of neon.

Answer:

KI is the formula for potassium iodide

Explanation:

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