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3 years ago

Which statement does NOT correctly compare zinc with another element

Chemistry

1 answer:

Nostrana [21]3 years ago

6 0

Answer:

because Zinc is not shiny but it is a white solid

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If you have 250mL of an 11M solution and add enough water to dilute it to 7 M, then what is the final volume of the solution?

Luba_88 [7]

35.7M is the answer to this question

4 0

3 years ago

In a controlled scientific experiment, a scientist A. alters one test variable (independent variable) and observes the effects o

Lubov Fominskaja [6]

Answer:

C )

Explanation:

Controlled scientific experiment tests scientific assumption (hypothesis), under controlled conditions.

In controlled scientific experiment, alters the test variable (independent variable) and observes the effects on the outcome variable (dependent variable).

Eg : Studying impact of sunlight on plant's group, where former independent variable is altered & its effects on dependent outcome variable is observed.

6 0

3 years ago

What has the highest ionization energy?

Inessa [10]

the highest ionization energy is Be, it is higher and righter than other elements in periodic table, so it harder to remove electron from its atom

5 0

3 years ago

PLS HELP QUICK ALOTTT OF POINTS

timofeeve [1]

Answer:

$\boxed {\boxed {\sf 0.80 \ mol\ F}}$

Explanation:

We are asked to find how many moles are in 4.8 × 10²³ fluorine atoms. We convert atoms 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. In this case, the particles are atoms of fluorine.

We will convert using dimensional analysis and set up a ratio using Avogadro's Number.

$\frac {6.022 \times 10^{23} \ atoms \ F}{ 1 \ mol \ F}$

We are converting 4.8 × 10²³ fluorine atoms to moles, so we multiply the ratio by this number.

$4.8 \times 10^{23} \ atoms \ F *\frac {6.022 \times 10^{23} \ atoms \ F}{ 1 \ mol \ F}$

Flip the ratio so the units of atoms of fluorine cancel each other out.

$4.8 \times 10^{23} \ atoms \ F *\frac { 1 \ mol \ F}{6.022 \times 10^{23} \ atoms \ F}$

$4.8 \times 10^{23} *\frac { 1 \ mol \ F}{6.022 \times 10^{23} }$

Condense into 1 fraction.

$\frac { 4.8 \times 10^{23} }{6.022 \times 10^{23} } \ mol \ F$

Divide.

$0.7970773829 \ mol \ F$

The original measurement of atoms has 2 significant figures, so our answer must have the same. For the number we found, that is the hundredths place. The 7 in the thousandths tells us to round the 9 in the hundredths place up to a 0. Then, we also have to round the 7 in the tenths place up to an 8.

$0.80 \ mol \ F$

4.8 × 10²³ fluorine atoms are equal to 0.80 moles of fluorine.

6 0

3 years ago

Which of these molecules is nonpolar? O A. PF 3 O B. 02 O C. CO O D. CHCI

zloy xaker [14]

B is the answer

please mark me brainlist ^^

5 0

3 years ago