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3 years ago

If an ion gains one or more electrons, it becomes a

Chemistry

2 answers:

pogonyaev3 years ago

4 0

Answer:a negative charge

Explanation:

while an atom that gains electrons and becomes negatively charged is known as an anion.

telo118 [61]3 years ago

3 0

The answer is anion hope that helps

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If you have a graduated cylinder, containing 15.5 mL and this volume changes to 95.2 mL after a metal with a mass of 7.95g is dr

xxTIMURxx [149]

Answer: The density of the object will be $9.97\times 10^{-2}$ g/ml.

Explanation:

Density is defined as the mass contained per unit volume.

$Density=\frac{mass}{Volume}$

Given : Mass of object = 7.95 grams

Volume of water displaced = volume of the object = (95.2 - 15.5) ml =79.7 ml

Putting in the values we get:

$Density=\frac{7.95g}{79.7ml}=0.0997g/ml$

Thus density of the object will be $9.97\times 10^{-2}$ g/ml

4 0

4 years ago

Một hỗn hợp X gồm CH3OH; C2H5OH; phenol có khối lượng 28,9 gam phản ứng vừa hết với 100ml dung dịch NaOH 2M. Phần trăm theo khối

slavikrds [6]

Answer:

nNaOH = 0,2 mol

Trong hỗn hợp các chất đề bài cho chỉ có phenol tác dụng với NaOH

C6H5OH + NaOH → C6H5ONa + H2O

0,2 ← 0,2 (mol)

⟹ mphenol = 0,2.94 = 18,8 gam

⟹

%mC6H5OH=18,8/28,9 x100%= 65,05%

Explanation:

3 0

3 years ago

7) Facilitated diffusion is

Illusion [34]

The passive movement of molecules or ions across a plasma membrane by means of a transports protein located in the plasma membrane

3 0

3 years ago

Name two salts used in black and white photography

gavmur [86]

The two salts would be <span>Silver Iodide & Silver Bromide</span>

6 0

4 years ago

What would happen to the rate of a reaction with rate law rate = k [NO]^2[H2] if

Ede4ka [16]

The rate of a reaction would be one-fourth.

<h3>Further explanation</h3>

Given

Rate law-r₁ = k [NO]²[H2]

Required

The rate of a reaction

Solution

The reaction rate (v) shows the change in the concentration of the substance (changes in addition to concentrations for reaction products or changes in concentration reduction for reactants) per unit time.

Can be formulated:

Reaction: aA ---> bB

$\large{\boxed{\boxed{\bold{v~=~-\frac{\Delta A}{\Delta t}}}}$

$\large{\boxed{\boxed{\bold{v~=~+\frac{\Delta B}{\Delta t}}}}$

The concentration of NO were halved, so the rate :

$\tt r_2=k[\dfrac{1}{2}No]^2[H_2]\\\\r_2=\dfrac{1}{4}k.[No]^2[H_2]\\\\r_2=\dfrac{1}{4}r_1$

3 0

3 years ago

Read 2 more answers