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3 years ago

13

Muscles work in ___ so when other muscles contract the other _

1 answer:

abruzzese [7]3 years ago

8 0

The first word could be: pairs and the second: relax

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¿Que es bacteria y un virus ?<br>es para hoy por favor ayúdeme

swat32

i) Las bacterias son organismos microscópicos unicelulares que prosperan en diversos entornos. Estos organismos pueden vivir en el suelo, el océano y dentro del intestino humano.

ii) Un virus es un agente infeccioso submicroscópico que se replica solo dentro de las células vivas de un organismo. Los virus infectan todas las formas de vida, desde animales y plantas hasta microorganismos, incluidas bacterias y arqueas.

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3 years ago

Read 2 more answers

Match the following associations. Exothermic or endothermic

Alekssandra [29.7K]

<u>Answer:</u>

<em>1) ∆H is positive $\Rightarrow$ Endothermic </em>

<em>2) $E_p>E_r$ $\Rightarrow$ Endothermic </em>

<em>3) Energy is absorbed $\Rightarrow$ Endothermic </em>

<em>4) $E_r>E_p$ $\Rightarrow$ Exothermic </em>

<em>5) ∆H is negtive $\Rightarrow$ Exothermic </em>

<em></em>

<u>Explanation:</u>

∆H is called as enthalpy change

It is also called as Heat of reaction

Energy is required for the bond to break a bond.

Energy is released when a bond is formed.

$H_2+Cl_2>2HCl$

that is

$H-H+Cl-Cl>2H-Cl$

We see in this equation, bonds between hydrogen and chlorine molecules gets broken and on the right side bond is formed in HCl.

If energy of products greater than energy of reactants then the reaction enthalpy change is endothermic .

If energy of products lesser than energy of reactants then the reaction enthalpy change is exothermic .

For example

$\Delta H=E_p-E_r$

$=30KJ-20KJ$

$=+10KJ$

(positive hence endothermic)

$\Delta H=E_p-E_r$

$=10KJ-40KJ$

$=-30KJ$

(negative hence exothermic)

8 0

3 years ago

What is the molarity of a solution containing 7.47 moles of solute in 4.31 liters of<br> solvent?

scoray [572]

Answer:

1.73 M

Explanation:

Molarity is moles per liter, so we need to divide 7.47 moles by 4.31 liters to get the molarity of the solution.

7.47/4.31 ≈ 1.73 M

5 0

3 years ago

I went to the doctor for a check-up last week. First, she examined the (1) ___ portion of my body by listening to my heart and t

Zinaida [17]

1. medial
2.superior
3. inferior
4.lateral
5.inferior

7 0

3 years ago

Calculate the compound amount. Use the compound amount formula and a calculator. (Round your answer to two decimal places.) P =

Julli [10]

Answer:

The compound amount is $303.03 .

Explanation:

Formula for compound interest:

$A=P\times (1+\frac{R}{n})^{tn})$

Principle amount = $1100

Rate of the interest compounded semiannually :

= R = 9% = 0.09

Number of times interest compounded, n = $\frac{12}{6}=2$

(semi means two times in a year)

Time period = T = 14

$A=\$1100\times (1+\frac{0.09}{2})^{2\times 14}=\$303.0310\approx \$303.03$

The compound amount is $303.03 .

5 0

3 years ago